[BREAK] Marketplace standalone page and app request flow

[rique223]

Proposed changes (including videos or screenshots)

Remove marketplace from the admin menu (on both the file system and the UI), change it into a standalone page, expose its use to end-users, and create an app request flow that allows end-users to ask for app installations in their workspaces directly through Rocket Chats UI.

Demo loom: https://www.loom.com/share/643ba3432225418e96c10041f386ff48

Jira tasks and ADRs

All tasks, descriptions, and designs of work done in this PR can be found on the tasks below, which also double down as simplified ADRs.

MKP-147 - Remove marketplace from the admin menu and put it on its own page

MKP-68 - Create an enterprise option on the new marketplace sidebar

MKP-150 - Implement the SideNav of the new marketplace page

MKP-151 - Brainstorm and implement the new marketplace routes

MKP-179 - Retrieve number of requested apps and make it available for components

MKP-181 - Implement requested option on marketplace sidebar

MKP-184 - Create requested apps page

MKP-185 - Implement requested apps list layout and logic

MKP-180 - Implement requested apps option to home screen kebab menu

MKP-188 - Implement the requested apps tab on app details page

MKP-187 - Implement visualized requests system on apps list tags and app requests tab

MKP-164 - ALL view the app's technical documentation page

MKP-197 - Rocket.cat notification for admins when an app is requested

MKP-224 - After i click submit request in the modal the modal is not closing

Issue(s)

Steps to test or reproduce

To test the exposed marketplace and end-user request flow:

1. Run Rocket.Chat pointing cloud and marketplace to staging
   E.G.: yarn dev
2. Create a new Rocket.Chat instance
3. Create 1 admin account and a couple of end-user accounts (this can be done by simply logging out of the main admin account and creating a new one from the login screen)
4. Login into one of the end-user accounts
5. Click on the administration kebab menu and select marketplace
6. Select any app and click on the request option through the app menu (the small kebab menu on each individual app list entry) or through the request button inside of the app details page of the selected app
7. Write your request message and submit, your request should now appear in the requested tab of the app details page of the requested app;

To test the admin request flow and request visualization system:

1. On the same workspace as before repeat step 1 and skip steps 2, 3, and 4 of the end-user test flow;
2. Login into the admin account
3. Click on the administration kebab
4. Verify if the unseen requests badge is present on the "Requested" option
5. Click on the "Requested" option
6. Verify if the unseen requests badge is present on the "Requested" option of the marketplace sidebar
7. Select any app with unseen requests (The ones with a blue tag)
8. Click on the Requests tab
9. Any changes to this tab content page should mark the requests as seen. E.G.: Closing the marketplace, going back to the apps list, changing items per page or page in the pagination, changing tabs, and so on;

Further comments

[codecov]

Codecov Report

Merging #27389 (d2552fb) into develop (e125a15) will increase coverage by 11.95%.
The diff coverage is 34.78%.

❗ Current head d2552fb differs from pull request most recent head 9be74fc. Consider uploading reports for the commit 9be74fc to get more accurate results

@@             Coverage Diff              @@
##           develop   #27389       +/-   ##
============================================
+ Coverage    32.98%   44.93%   +11.95%     
============================================
  Files          628      766      +138     
  Lines        12492    14893     +2401     
  Branches      1847     2067      +220     
============================================
+ Hits          4120     6692     +2572     
+ Misses        8164     7909      -255     
- Partials       208      292       +84     

Flag	Coverage Δ
e2e	44.89% <34.78%> (+11.91%)	⬆️

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