Handling of renamed/deleted/replaced projects

[wonder-sk]

Input should be able to identify if a project has been deleted from the server - or it may have been replaced by another project with the same name. To detect this, we may need a unique project ID from the server.

See also https://github.com/lutraconsulting/qgis-mergin-plugin/issues/110

[saberraz]

Also related to https://github.com/lutraconsulting/input/issues/614

[saberraz]

Closing in favour of #614

[wonder-sk]

Mergin v2021.6 has introduced unique project IDs and added endpoint for listing projects by ID (/v1/project/by_uuids?uuids=id1,id2,id3). v2021.7 also adds fetching full project info by ID (/v1/project/by_uuid/id1)

Hopefully that should be enough to detect if:

• a project that is available locally with the same name is actually a different project now (IDs are not matching)
• a project that is available locally has been renamed / transferred (name may be different but IDs are the same)