Add a plugin to KDE Connect which supports exporting the Android contacts databases to vcards on the desktop
When the devices are connected, the plugin sends a request for all timestamps and IDs
When a packet with timestamps and IDs is received, it verifies it has vcards for each ID and that the timestamps match and deletes any vcards for IDs which were not reported. It then sends a request for all vcards which were missing or need updating
When a packet with vcards is received they are unconditionally written to disk, possibly overwriting existing vcards
Provides one dbus method: contacts/synchronizeRemoteWithLocal which triggers the request for all timestamps and IDs
BUG: 367999