Add project grouping mechanism

[matusdrobuliak66]

Add an option to group multiple jobs together. The main use case is for Sim4Life, for example, when a multiport simulation is triggered, it creates, let's say, 8 independent jobs. Ideally, these jobs should be grouped together in the Activity Center / Project Activity History view. + The name should be the simulation name from the client (so its understandable for the user).

Currently, the Sim4Life client is already using the project metadata table to inject a group_id. This group_id UUID uniquely identifies a run consisting of multiple grouped jobs. If the group ID is set to ...0000-0000-0000-0000..., it means the jobs are not part of a group - just a single, standalone job.

My proposal is to: TODO

• naming ideas: "collections" (already used in functions)