[chore] Replace internal/datadog with datadog agent packages (#33233)

**Description:** 

Remove internal/datadog package, replace with datadog-agent packages.

Follow-up of DataDog/datadog-agent#25841

Author: songy23

.github/CODEOWNERS

@@ -123,7 +123,6 @@ extension/sumologicextension/                            @open-telemetry/collect
 internal/aws/                                            @open-telemetry/collector-contrib-approvers @Aneurysm9 @mxiamxia
 internal/collectd/                                       @open-telemetry/collector-contrib-approvers @atoulme
 internal/coreinternal/                                   @open-telemetry/collector-contrib-approvers @open-telemetry/collector-approvers
-internal/datadog/                                        @open-telemetry/collector-contrib-approvers @mx-psi @dineshg13
 internal/docker/                                         @open-telemetry/collector-contrib-approvers @rmfitzpatrick @jamesmoessis
 internal/exp/metrics/                                    @open-telemetry/collector-contrib-approvers @sh0rez @RichieSams
 internal/filter/                                         @open-telemetry/collector-contrib-approvers @open-telemetry/collector-approvers

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -121,7 +121,6 @@ body:
       - internal/aws
       - internal/collectd
       - internal/core
-      - internal/datadog
       - internal/docker
       - internal/exp/metrics
       - internal/filter

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -115,7 +115,6 @@ body:
       - internal/aws
       - internal/collectd
       - internal/core
-      - internal/datadog
       - internal/docker
       - internal/exp/metrics
       - internal/filter

.github/ISSUE_TEMPLATE/other.yaml

@@ -115,7 +115,6 @@ body:
       - internal/aws
       - internal/collectd
       - internal/core
-      - internal/datadog
       - internal/docker
       - internal/exp/metrics
       - internal/filter

.github/ISSUE_TEMPLATE/unmaintained.yaml

@@ -120,7 +120,6 @@ body:
       - internal/aws
       - internal/collectd
       - internal/core
-      - internal/datadog
       - internal/docker
       - internal/exp/metrics
       - internal/filter

cmd/configschema/go.mod

@@ -228,6 +228,8 @@ require (
 	github.com/DataDog/datadog-agent/comp/otelcol/logsagentpipeline v0.54.0-rc.5 // indirect
 	github.com/DataDog/datadog-agent/comp/otelcol/logsagentpipeline/logsagentpipelineimpl v0.54.0-rc.5 // indirect
 	github.com/DataDog/datadog-agent/comp/otelcol/otlp/components/exporter/logsagentexporter v0.54.0-rc.5 // indirect
+	github.com/DataDog/datadog-agent/comp/otelcol/otlp/components/metricsclient v0.0.0-20240525065430-d0b647bcb646 // indirect
+	github.com/DataDog/datadog-agent/comp/otelcol/otlp/components/statsprocessor v0.0.0-20240525065430-d0b647bcb646 // indirect
 	github.com/DataDog/datadog-agent/pkg/collector/check/defaults v0.54.0-rc.5 // indirect
 	github.com/DataDog/datadog-agent/pkg/config/env v0.54.0-rc.5 // indirect
 	github.com/DataDog/datadog-agent/pkg/config/model v0.54.0-rc.5 // indirect
@@ -562,7 +564,6 @@ require (
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/xray v0.101.0 // indirect
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/collectd v0.101.0 // indirect
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/common v0.101.0 // indirect
-	github.com/open-telemetry/opentelemetry-collector-contrib/internal/datadog v0.101.0 // indirect
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/kafka v0.101.0 // indirect
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/sharedcomponent v0.101.0 // indirect
 	github.com/open-telemetry/opentelemetry-collector-contrib/pkg/experimentalmetricmetadata v0.101.0 // indirect
@@ -1187,8 +1188,6 @@ replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/obse
 
 replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/k8stest => ../../internal/k8stest
 
-replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/datadog => ../../internal/datadog
-
 replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/jaegerremotesampling => ../../extension/jaegerremotesampling
 
 replace github.com/open-telemetry/opentelemetry-collector-contrib => ../..

cmd/configschema/go.sum

@@ -266,7 +266,6 @@ replaces:
   - github.com/open-telemetry/opentelemetry-collector-contrib/exporter/cassandraexporter => ../../exporter/cassandraexporter
   - github.com/open-telemetry/opentelemetry-collector-contrib/receiver/udplogreceiver => ../../receiver/udplogreceiver
   - github.com/open-telemetry/opentelemetry-collector-contrib/internal/splunk => ../../internal/splunk
-  - github.com/open-telemetry/opentelemetry-collector-contrib/internal/datadog => ../../internal/datadog
   - github.com/open-telemetry/opentelemetry-collector-contrib/receiver/podmanreceiver => ../../receiver/podmanreceiver
   - github.com/open-telemetry/opentelemetry-collector-contrib/receiver/flinkmetricsreceiver => ../../receiver/flinkmetricsreceiver
   - github.com/open-telemetry/opentelemetry-collector-contrib/receiver/awsecscontainermetricsreceiver => ../../receiver/awsecscontainermetricsreceiver

cmd/otelcontribcol/builder-config.yaml

@@ -295,6 +295,8 @@ require (
 	github.com/DataDog/datadog-agent/comp/otelcol/logsagentpipeline v0.54.0-rc.5 // indirect
 	github.com/DataDog/datadog-agent/comp/otelcol/logsagentpipeline/logsagentpipelineimpl v0.54.0-rc.5 // indirect
 	github.com/DataDog/datadog-agent/comp/otelcol/otlp/components/exporter/logsagentexporter v0.54.0-rc.5 // indirect
+	github.com/DataDog/datadog-agent/comp/otelcol/otlp/components/metricsclient v0.0.0-20240525065430-d0b647bcb646 // indirect
+	github.com/DataDog/datadog-agent/comp/otelcol/otlp/components/statsprocessor v0.0.0-20240525065430-d0b647bcb646 // indirect
 	github.com/DataDog/datadog-agent/pkg/collector/check/defaults v0.54.0-rc.5 // indirect
 	github.com/DataDog/datadog-agent/pkg/config/env v0.54.0-rc.5 // indirect
 	github.com/DataDog/datadog-agent/pkg/config/model v0.54.0-rc.5 // indirect
@@ -614,7 +616,6 @@ require (
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/xray v0.101.0 // indirect
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/collectd v0.101.0 // indirect
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/coreinternal v0.101.0 // indirect
-	github.com/open-telemetry/opentelemetry-collector-contrib/internal/datadog v0.101.0 // indirect
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/docker v0.101.0 // indirect
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/exp/metrics v0.101.0 // indirect
 	github.com/open-telemetry/opentelemetry-collector-contrib/internal/filter v0.101.0 // indirect
@@ -888,8 +889,6 @@ replace github.com/open-telemetry/opentelemetry-collector-contrib/receiver/udplo
 
 replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/splunk => ../../internal/splunk
 
-replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/datadog => ../../internal/datadog
-
 replace github.com/open-telemetry/opentelemetry-collector-contrib/receiver/podmanreceiver => ../../receiver/podmanreceiver
 
 replace github.com/open-telemetry/opentelemetry-collector-contrib/receiver/flinkmetricsreceiver => ../../receiver/flinkmetricsreceiver