- Introduced `profiles_service.proto` to define the ProfilesService for exporting resource profiles.
- Implemented `OtelProfilesIngestService` to handle ingestion of profiles, including processing and flushing to the database.
- Created `ProfilesQueueService` to manage profile ingestion jobs.
- Added comprehensive tests for `OtelProfilesIngestService`, covering stack frame resolution, timestamp parsing, and row building for profiles and samples.