feat: Move collection settings to own section

[SuaYoo]

Resolves #2840

Changes

• Adds new "Collections" setting to workflow form, workflow settings, and archived item overview
• Consistently displays collections list in workflow and archived item settings
• Renames archived item "Edit Metadata" dialog
• Fixes collection typing to account for collections without created

Manual testing

Both the app and mkdocs should be running concurrently to test step 4.

1. Log in as crawler
2. Go to new workflow. Verify "Collection" is in side navigation
3. Click "Collection". Verify auto-add field has been moved from the metadata section to the collection section
4. Click "User Guide". Verify user guide opens to the correct section
5. Go to edit workflow.
6. Add a collection. Verify collection is displays as expected, and clicking the arrow button opens the collection a new tab (note: new tab may show 404 page at first, fix is in fix: Prevent showing "not found" page when opening link in new tab #2849)
7. Remove collection. Verify collection is removed as expected
8. Add collection and save. Verify new collection is displayed in settings under "Collection" heading
9. Go to an archived item that is in a collection. Verify list of collection names are displayed in "Collections" section
10. Click arrow next to collection name. Verify collection opens in new tab
11. Click pencil icon name to "Collections" heading. Verify dialog opens titled "Edit Archived Item"

Screenshots

Page	Image/video
Workflow - Editing	Initial: Added:
Workflow / Settings
Archived item / Overview
Archived item - Editing

Follow-ups

The "Add to collection" component has mostly been left as-is. Improvements to search functionality, like fuzzy search, will be added in followers #2846 and #2845

[emma-sg]

Looks good! I saw one overflow issue with the archived item detail page, but I think that can be a separate fix:

[tw4l]

Works great! And thanks as always for the great testing instructions :)