Wrapping up the leftover tasks in xblocks-extra, prepare for the release

[farhan]

Ticket: #16

Reference PR's: while shifting to uv and writing upgrade-python-requirements.yml

openedx/openedx-aspects#340
openedx/xqueue-watcher#122

Tasks done in this PR:

• License should be created/moved at the root
• License has been added copied from xblocks-contrib repo
• License should be bundled in the packaging
• Implement python upgrade workflow, Move to uv (from pip)
• catalog-info.yaml should be created at the root
• PACKAGE DATA should be revised for all the xblocks as we are not shifting the packaging strategies for example
• i18n should be supported, translations commands in make file is pending to add
• Fixing minor issue is left, Irtaza is working on it.
• Testing of docs is pending
• Make sure all the readme content of the xblocks has been moved to the xblocks-extra repository. We should create different read-me files for different blocks in their directories for isolation and easy maintenance.
• We should reference the inter block readmes to the main readme file and list the xblocks repo will contain.
• We should also make sure all the migrated XBlocks have been marked deprecated and archived before closing this epic.
• What about the issues created in the main repositories, should we move them all, I think so.
• What about the un-merged PR's, I think as soon as we make xblocks-extra ready, publish it on pypi, we can drop message on the PR's to shift their PR's.
• Adding @kdmccormick comment on xblocks-extra:

We should make sure:

Existing sites will be able to uninstall the old packages and install xblocks-extra seamlessly.
There will be documentation explaining that to them.
Both the old repos and xblocks-extra work in Verawood, so that they have a full release to transition.

• Write transition/migration notes for the Verawood open edx release
• Mention about archived XBlocks in the Verawood release notes
  Notes have been added here

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.80%. Comparing base (2f72077) to head (7956a76).
⚠️ Report is 1 commits behind head on main.

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HEAD has 1 upload less than BASE

Flag	BASE (2f72077)	HEAD (7956a76)
unittests	2	1

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #27      +/-   ##
==========================================
- Coverage   86.98%   79.80%   -7.19%     
==========================================
  Files           7       41      +34     
  Lines         269     1139     +870     
  Branches       23       75      +52     
==========================================
+ Hits          234      909     +675     
- Misses         31      203     +172     
- Partials        4       27      +23     

Flag	Coverage Δ
unittests	79.80% <ø> (-7.19%)	⬇️

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[irtazaakram]

Make sure to update all the GitHub actions to latest version:
actions/download-artifact@v8
actions/upload-artifact@v7
actions/checkout@v6
codecov/codecov-action@v6

[irtazaakram]

We should add https://github.com/openedx/xblocks-contrib/blob/main/.github/PULL_REQUEST_TEMPLATE.md & https://github.com/openedx/xblocks-contrib/blob/main/.github/dependabot.yml to this repo too.

[farhan]

@irtazaakram

• workflows added

Make sure to update all the GitHub actions to latest version: actions/download-artifact@v8 actions/upload-artifact@v7 actions/checkout@v6 codecov/codecov-action@v6

• updated