Depend on the providers via the bcr module

[aiuto]

Blocked on

• having the providers in bcr
• a release notes/ readme, or something to explain how this works if you depend on the package with http_archive.

Annoucement (draft)

We are about to introduce a structural change to rules_pkg where the providers are in a distinct repository. This will allow those to be shared across several projects in a way that facilitates interoperability without having to build every extension inside rules_pkg.

• rules_pkg_providers will be a new release name and a BCR module. It will start at 0.0.1 and quickly bump to 1.0.0 after an initial shake-out period.
• rules_pkg will start to depend on rules_pkg_providers in MODULE.bazel.

Note that this is a breaking change for WORKSPACE users

For that reason, we will bump the major version number of rules_pkg.

• rules_pkg will have a final 1.x release this week.
• rules_pkg 2.0.0 will depend on rules_pkg_providers.

#996

[cgrindel]

@aiuto I see you requested review. However, the PR is still in draft. Do you want me to review?

[tonyaiuto]

@aiuto I see you requested review. However, the PR is still in draft. Do you want me to review?

No. I put the wrong one out for review. The release scripts are next.