[BD-05] [TNL-7310] [BB-3388] Pluggable ORA Submission Editor - TinyMCE

Depends on https://github.com/edx/edx-ora2/pull/1574

This PR adds TinyMCE v5 as the WYSIWYG editor for ORA Response.

*JIRA tickets*:

• https://openedx.atlassian.net/browse/TNL-7310

• https://tasks.opencraft.com/browse/BB-3388

*Discussions*: None

*Dependencies*: https://github.com/edx/edx-ora2/pull/1574

*Screenshots*:

*Sandbox URL*: https://bb3388.sandbox.opencraft.hosting/

*Merge deadline*: None

*Testing instructions*:

1. Clone this PR on your local devstack. Install using make install-local-ora.
2. Create an ORA block. On the settings tab select ``WYSIWYG Editor`` from Response Editor Dropdown.
3. Publish ORA Block
4. Check that TinyMCE editor loaded in both LMS & Studio.
5. Write on the editor, check ``Save Your Progress`` becomes enabled.
6. Click on ``Save Your Progress`` and reload the page. You should come back where you left off.
7. Check if the submission process working.

*Author notes and concerns*:

1. This PR includes TinyMCE v5 and all of the assets related to the editor.

*Reviewers*

• [ ] @viadanna

• [ ] @xitij2000

• [ ] @giovannicimolin

• [ ] edX reviewer[s] TBD