Setup TeamCity caching

[evetion]

Currently both the .pixi and .julia folders are created/touched/updated by our builds on any of the agents we run on. Given multiple agents, we precompile on some, and not so much on others. Agentes are reset after a month.

It would be good to fix this and streamline this process by using caching, as we do for Github Actions. Teamcity has a build feature for caching, and I've implemented it: https://github.com/Deltares/Ribasim/blob/main/.teamcity/Templates/GenerateCache.kt#L23-L24. However, the current cache of .pixi and .julia is much larger than the allowed 3GB artefact limit.

TODO:

• Limit size of artefacts (choose, or split caching actions between pixi/julia)
• Instead of making use of ~/.julia, or ~/.pixi, generate/use a cache from a local location that is cleaned up afterwards.

[evetion]

The pixi cache is too big (9GB with Julia, only 3 is allowed). I've set the Julia cache based on DEPOT_PATH, but it doesn't seem to matter much yet...

[evetion]

Note that the above is thus live on TC.