E2E test for RPM prefetching

[brunoapimentel]

This PR implements an e2e test that covers the following steps:

• RPM prefetching (single arch: x86_64)

• Injection of project files (creation of repos and repofiles)

• Building a container that requires RPMs to be installed

• Running the container and validate that the output is correct

  Maintainers will complete the following section

• [ ] Commit messages are descriptive enough

• [ ] Code coverage from testing does not decrease and new code is covered

• [ ] Docs updated (if applicable)

• [ ] Docs links in the code are still valid (if docs were updated)

[brunoapimentel]

has been renamed to source only and so the SRPMs are not part of the SBOM here.

Which makes me wonder if we should set extra=forbid attribute in the model classes for the rpm lockfile as a way to avoid such mistakes.

https://docs.pydantic.dev/latest/api/config/#pydantic.config.ConfigDict.extra