Move API upload endpoint to package service

[jraddaoui]

• Remove the upload service and package.
• Set up and close the upload bucket in main.
• Update configuration:
  • Make upload max size configurable.
  • Use go.artefactual.dev/tools/bucket config struct.

Refs #977.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 47.72727% with 23 lines in your changes missing coverage. Please review.

Project coverage is 53.01%. Comparing base (8aa0da8) to head (2d4c5e4).

Files with missing lines	Patch %	Lines
cmd/enduro/main.go	0.00%	11 Missing :warning:
internal/package_/upload.go	69.23%	4 Missing and 4 partials :warning:
cmd/enduro-a3m-worker/main.go	0.00%	2 Missing :warning:
cmd/enduro-am-worker/main.go	0.00%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1016 +/- ## ========================================== - Coverage 53.13% 53.01% -0.12% ========================================== Files 101 100 -1 Lines 5814 5768 -46 ========================================== - Hits 3089 3058 -31 + Misses 2474 2461 -13 + Partials 251 249 -2 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[jraddaoui]

This endpoint only proxies the upload to a bucket, the workflow is then triggered like a normal MinIO deposit, if properly configured.