Automated Cosmos Tag/Releaser

[technicallyty]

Build a gh action tool that automates the tagging process. It should work as follows:

• User opens changelog prep PR for module they wish to update. (add label "tag-me" or whatever)
• when this PR merges, the action should make a tag for that library, and then open a PR to replace all go mod replaces with the tagged version (except for a select few modules that we always want to have replaces i.e., tests/ should always replace SDK)

[aljo242]

@technicallyty done?

[technicallyty]

we should schedule a call for integrating it into CI. ive tested it manually in a separate repo and got it working, but should have more eyes on how it works