Move django rest swagger to drf-yasg

[NeOneSoft]

This PR was created in order to remove django-rest-swagger package and use drf-yasg.

[openedx-webhooks]

Thanks for the pull request, @NeOneSoft! I've created OSPR-6110 to keep track of it in JIRA, where we prioritize reviews. Please note that it may take us up to several weeks or months to complete a review and merge your PR.

Feel free to add as much of the following information to the ticket as you can:

• supporting documentation
• Open edX discussion forum threads
• timeline information ("this must be merged by XX date", and why that is)
• partner information ("this is a course on edx.org")
• any other information that can help Product understand the context for the PR

All technical communication about the code itself will be done via the GitHub pull request interface. As a reminder, our process documentation is here.

Please let us know once your PR is ready for our review and all tests are green.

[natabene]

@NeOneSoft Thanks so much! Is this for edx/upgrades#17 ? Is this ready for our review?

[codecov]

Codecov Report

Merging #174 (5567cda) into master (a029fda) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #174   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           12        12           
  Lines          412       412           
  Branches        47        47           
=========================================
  Hits           412       412           

Flag	Coverage Δ
unittests	100.00% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a029fda...5567cda. Read the comment docs.

[NeOneSoft]

Hi @natabene thank you for your response, yes it is for edx/upgrades#17 and its ready for review. Thanks a lot!!

[openedx-webhooks]

@NeOneSoft Even though your pull request wasn’t merged, please take a moment to answer a two question survey so we can improve your experience in the future.

[NeOneSoft]

This PR was closed on behalf of #176 in order to fix conflicting files.