Activate Develocity's Build Cache

[adpi2]

1. Enable read and write to local cache for all users
2. Enable read from remote cache for all users
3. Enable write to remote cache on CI only
4. Disable test caching on all projects: We generally don't rerun tests if nothing changed. When users do run the tests locally, they probably want to see their executions.

ping @hamzaremmal

[tgodzik]

Och, awesome! Will we be able to use that locally?

[adpi2]

Och, awesome! Will we be able to use that locally?

Yes, once this is merged you will be able to download compilation outputs from the remote server without any further configuration.

[adpi2]

Superseded by #22578

[adpi2]

I rebased the branch because Mima job failed: https://github.com/scala/scala3/actions/runs/13541557343

[adpi2]

Mima failed again: https://github.com/scala/scala3/actions/runs/13544643262/job/37853234696

I suspect there is an incorrect cache hit. We read something from the cache instead of recompiling it and then we get a TASTy version mismatch.