Remove config.[Receivers|Exporters|Processors|Extensions], use map directly

[bogdandrutu]

Signed-off-by: Bogdan Drutu [email protected]

[codecov]

Codecov Report

Merging #4344 (0bd76c7) into main (9cdb1da) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #4344      +/-   ##
==========================================
- Coverage   87.25%   87.25%   -0.01%     
==========================================
  Files         177      177              
  Lines       10585    10581       -4     
==========================================
- Hits         9236     9232       -4     
  Misses       1107     1107              
  Partials      242      242              

Impacted Files	Coverage Δ
config/config.go	100.00% <ø> (ø)
config/exporter.go	88.88% <ø> (ø)
config/extension.go	88.88% <ø> (ø)
config/processor.go	88.88% <ø> (ø)
config/receiver.go	88.88% <ø> (ø)
config/configunmarshaler/defaultunmarshaler.go	100.00% <100.00%> (ø)
exporter/exporterhelper/factory.go	100.00% <0.00%> (ø)
receiver/receiverhelper/factory.go	100.00% <0.00%> (ø)
extension/extensionhelper/factory.go	81.25% <0.00%> (ø)
processor/batchprocessor/splitlogs.go	100.00% <0.00%> (ø)
... and 5 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9cdb1da...0bd76c7. Read the comment docs.

[dmitryax]

Why we want this to be removed?

[bogdandrutu]

@dmitryax smaller public API, also easier to read the Config struct I believe.