RUM-8950: Implement Kotlin compiler plugin DSL configuration

[ambushwork]

What does this PR do?

This PR implements the DSL config for auto instrumentation, so that clients can define the config like:

datadog{

      composeInstrumentation{
              trackViews =  InstrumentationMode.AUTO
              trackActions =  InstrumentationMode.ANNOTATION
              recordImages =  InstrumentationMode.DISABLE
      }
}

Motivation

RUM-8950

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests (unit, integration, e2e)
• Make sure you discussed the feature or bugfix with the maintaining team in an Issue
• Make sure each commit and the PR mention the Issue number (cf the CONTRIBUTING doc)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 76.13636% with 21 lines in your changes missing coverage. Please review.

Project coverage is 78.17%. Comparing base (3e597fc) to head (a3109d7).
Report is 2 commits behind head on feature/kotlin-compiler-plugin.

Files with missing lines	Patch %	Lines
...atadog/gradle/plugin/kcp/DatadogPluginRegistrar.kt	50.00%	9 Missing and 1 partial ⚠️
...com/datadog/gradle/plugin/DdAndroidGradlePlugin.kt	0.00%	9 Missing ⚠️
.../datadog/gradle/plugin/DdExtensionConfiguration.kt	66.67%	1 Missing ⚠️
...n/com/datadog/gradle/plugin/InstrumentationMode.kt	75.00%	1 Missing ⚠️

Additional details and impacted files

@@                         Coverage Diff                          @@
##             feature/kotlin-compiler-plugin     #330      +/-   ##
====================================================================
- Coverage                             78.26%   78.17%   -0.09%     
- Complexity                              315      330      +15     
====================================================================
  Files                                    37       41       +4     
  Lines                                  1233     1315      +82     
  Branches                                149      154       +5     
====================================================================
+ Hits                                    965     1028      +63     
- Misses                                  187      205      +18     
- Partials                                 81       82       +1     

Files with missing lines	Coverage Δ
...om/datadog/gradle/plugin/kcp/DatadogIrExtension.kt	66.67% <100.00%> (+30.95%)	⬆️
...DatadogKotlinCompilerPluginCommandLineProcessor.kt	100.00% <100.00%> (ø)
.../gradle/plugin/kcp/InstrumentationConfiguration.kt	100.00% <100.00%> (ø)
...gradle/plugin/kcp/InternalCompilerConfiguration.kt	100.00% <100.00%> (ø)
.../datadog/gradle/plugin/DdExtensionConfiguration.kt	92.86% <66.67%> (-3.14%)	⬇️
...n/com/datadog/gradle/plugin/InstrumentationMode.kt	75.00% <75.00%> (ø)
...com/datadog/gradle/plugin/DdAndroidGradlePlugin.kt	59.69% <0.00%> (-2.21%)	⬇️
...atadog/gradle/plugin/kcp/DatadogPluginRegistrar.kt	62.96% <50.00%> (-37.04%)	⬇️

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[0xnm]

lgtm! I've left few suggestion, mainly to remove mention of "Kotlin Compiler" plugin from the public docs, because for the end-user it is just a single plugin (Gradle plugin) who does the job.