feat: add bumpversion and release on workflow distpatch

[Henrrypg]

This PR adds bumversion via workflow distpatch.

In order to work we need a Personal Access Token set in Action Secrets.

@felipemontoya can you help me with that?

The needed permissions are:
name: AI_EXNTENSIONS_GITHUB_TOKEN

• contents: write
• pull_requests: write

The CI Workflows are working similar to https://github.com/openedx/tutor-contrib-aspects/tree/main/.github/workflows

NOTE: changelog action works with markdown files. We needed to move from rst.

[openedx-webhooks]

Thanks for the pull request, @Henrrypg!

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.33%. Comparing base (1e2a0e9) to head (e323e2a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #223   +/-   ##
=======================================
  Coverage   95.33%   95.33%           
=======================================
  Files          69       69           
  Lines        8075     8075           
  Branches      429      429           
=======================================
  Hits         7698     7698           
  Misses        283      283           
  Partials       94       94           

Flag	Coverage Δ
unittests	95.33% <ø> (ø)

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