feat: add export library tags menu [FC-0049]

[rpenido]

Description

This PR adds an item in the Settings menu to allow a call of the function that exports the library tags to a CSV file.

Supporting Information

• Closes:
  • [Tagging] Download Library Tag Spreadsheet openedx/modular-learning#173
• Depends on:
  • feat: export tagged content library as csv [FC-0049] openedx/edx-platform#34246

Testing instructions

1. Use https://github.com/open-craft/taxonomy-sample-data/ to create some taxonomies.
2. Go to the library page in Studio and add some tags to the units in the course using the Manage Tags option
   
3. Checkout THIS branch and reload the library authoring page
4. Click on the Export Tags menu from the detail page of an existing library
5. Check if a CSV file is downloaded with the Library structure and the tags applied to its items.

---

Private-ref:

• FAL-3611

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (de8582a) 53.14% compared to head (e4d7c82) 53.14%.

Additional details and impacted files

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  Coverage   53.14%   53.14%           
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  Files          80       80           
  Lines        2021     2021           
  Branches      368      368           
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  Hits         1074     1074           
  Misses        914      914           
  Partials       33       33           

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[pomegranited]

@rpenido I have left a question about the ENABLE_TAGGING_TAXONOMY_PAGES env flag, but this change is working as expected 👍

• I tested this in my devstack using the PR test instructions.
• I read through the code
• I checked for accessibility issues by using my keyboard to navigate
• Includes documentation N/A
• User-facing strings are extracted for translation

[pomegranited]

We haven't defined this ENABLE_TAGGING_TAXONOMY_PAGES env variable in this MFE yet.. I don't know if we need one.

@bradenmacdonald do we need a config flag to gate this feature here like we did for course authoring? #400 was approved by upstream without one.

@rpenido If we do need it, it needs to be added to the various .env files, src/index.jsx, and to the README.

[bradenmacdonald]

This MFE is not part of the standard install (yet) right? I don't think we need the flag here; it can just always be on.

[rpenido]

Done: b7af486

[itsjeyd]

@rpenido @pomegranited It looks like these changes are ready for upstream review. I'm changing status on the Contributions board accordingly, but let me know if you have any objections.

@navinkarkera Could you give this a maintainer review?

[navinkarkera]

@rpenido Looks good to me. Please update the status and we can merge this openedx/edx-platform#34246 is merged.

[rpenido]

Hi @navinkarkera! Thank you for the review.
The edx-platform PR got merged!

[openedx-webhooks]

@rpenido 🎉 Your pull request was merged! Please take a moment to answer a two question survey so we can improve your experience in the future.