chore: adding first batch of exporters to opamp extension

[Astitva-sumo]

Adding another batch of components to opamp extension. This is being done to enable these components to be added in remotely managed collectors.

[Copilot]

Pull Request Overview

This PR adds support for five new exporters (carbon, debug, file, kafka, and loadbalancing) to the opamp extension, expanding the available telemetry export options.

• Adds factory registrations for the new exporters in the components.go file
• Updates go.mod with required dependencies for the new exporters
• Includes comprehensive test data configurations for each new exporter
• Adds test cases to verify configuration loading for all new exporters

Reviewed Changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
pkg/extension/opampextension/components.go	Adds factory imports and registrations for the 5 new exporters
pkg/extension/opampextension/go.mod	Updates dependencies to include the new exporter packages
pkg/extension/opampextension/opamp_agent_test.go	Adds test cases for each new exporter configuration
pkg/extension/opampextension/testdata/opamp.d/*.yaml	Test configuration files demonstrating each exporter's setup
.changelog/1796.added.txt	Changelog entry for the new feature

Comments suppressed due to low confidence (3)

pkg/extension/opampextension/testdata/opamp.d/opamp-kafka-exporter-config.yaml:35

• The encoding value 'legacy_encoding' appears to be a placeholder rather than a valid Kafka encoding format. Consider using actual encoding values like 'otlp_proto', 'jaeger_proto', or 'zipkin_proto'.

    encoding: legacy_encoding

pkg/extension/opampextension/testdata/opamp.d/opamp-kafka-exporter-config.yaml:37

• The encoding value 'metrics_encoding' appears to be a placeholder rather than a valid metrics encoding format. Consider using actual encoding values like 'otlp_proto' or 'prometheus'.

      encoding: metrics_encoding

pkg/extension/opampextension/testdata/opamp.d/opamp-file-exporter-config.yaml:19

• [nitpick] The resource attribute name 'dummy' appears to be a placeholder. Consider using a more realistic attribute name like 'service.name' or 'deployment.environment' for better test data.

      resource_attribute: dummy