Resolve "Split admin settings into multiple sub pages"
What does this MR do?
Splits the Admin Application Settings section into multiple sub pages. Adds sub pages as sub menu items to 'Settings' menu and adds routes and template partials for the newly added sub pages.
What are the relevant issue numbers?
Does this MR meet the acceptance criteria?
- Changelog entry added, if necessary
- Documentation created/updated
- Tests added for this feature/bug
- Conforms to the code review guidelines
- Conforms to the merge request performance guidelines
- Conforms to the style guides
- Conforms to the database guides
Closes #44998 (closed)