## Summary
- Add `has_more` to contacts search API response to enable infinite
scroll without expensive count queries
- Set `count` to the number of items in the current page instead of
total count
- Implement "Load more" button for contacts search results
- Keep existing contacts visible while loading additional pages
## Changes
### Backend
- Add `fetch_contacts_with_has_more` method that fetches N+1 records to
determine if more pages exist
- Return `has_more` in search endpoint meta response
- Set `count` to current page size instead of total count
### Frontend
- Add `APPEND_CONTACTS` mutation for appending contacts without clearing
existing ones
- Update search action to support `append` parameter
- Add `ContactsLoadMore` component with loading state
- Update `ContactsListLayout` to support infinite scroll mode
- Update `ContactsIndex` to use infinite scroll for search view
This PR fixes a few UI issues with the sidebar
1. `z-index` issues with sidebar dropdowns
2. Move the event listener to the root of the dropdown container, it
allows more consistent behaviour of the trigger, earlier the click on
the trigger when the dropdown was open would cause the container to
re-render
3. Use `perserve-open` for the status switcher menu item in the profile
menu.
4. Use `sessionStorage` instead of `localStorage` to preserve sidebar
dropdown info. When opening the dashboard without directly going to a
specific route, any previous known item would get expanded even if it's
link was not active, this caused issues across tabs too, this fixes it.
5. Use `snakeCaseKeys` instead of `decamelize` we had two packages doing
the same thing
6. Update `vueuse` the new version is vue3 only
Added the ability to update the contact's avatar via API and Dashboard.
- Contact create and update APIs can now accept avatar attachment parameters [form data].
- Contact create and update endpoints can now accept the avatar_url parameter.[json]
- API endpoint to remove a contact avatar.
- Updated Contact create/edit UI components with avatar support
Fixes: #3428
