Stack column, source icon, improved search, and status sorting.
- Added Stack column in container table (shows Docker Compose project name)
- Added source icon next to image name (links to org.opencontainers.image.source or org.opencontainers.image.url)
- Stack name is now included in search functionality
- Added sortable support for the Stack column
- Improved status sorting for more logical prioritization
- Added search by stack name
- Implemented clear search button (also works with ESC key)