Set up initial benchmark for worldcereal

[JeroenVerstraelen]

A simple initial benchmark workflow using the worldcereal scenario.
No regression test, no metrics

Github action, doesn't have to be recurrent yet.

[soxofaan]

initial setup is done

• added package with reusable test/benchmark utilities
• added initial unit tests (also triggered from github actions)
• added initial benchmark
  • githbub workflow just runs one benchmark at random now
  • benchmark still fails because there is no auth setup yet

[soxofaan]

First benchmark batch job is now running, fully triggered from GitHub workflow:

j-24062104655b4a8d91b124f13a3b625f from workflow https://github.com/ESA-APEx/apex_algorithms/actions/runs/9616807287

[soxofaan]

So the basics are in place now.

Quite some further finetuning and documentation to be covered (see TODO comments in the code)

[soxofaan]

because the worldcereal use case is still failing, I now added a very simple max NDVI UDP and benchmark scenario which now successfully runs in the benchmark workflow

[soxofaan]

Initial benchmark setup, with a daily run can be checked at https://github.com/ESA-APEx/apex_algorithms/actions/workflows/benchmarks.yaml

note that it sometimes works, and sometimes fails, but that is indication that the benchmark system works: one benchmark scenario (max_ndvi) finishes, while the worldcereal one does not work yet

[soxofaan]

I think it's time to close this one: basics are in place,
and follow-up tickets are created, e.g.:

• APEx benchmarks: add regression test #5
• APEx benchmarks: add metrics #7
• Schema for benchmark scenario definitions #14
• Merge esa-apex-toolbox-python repo #15
• Rethink or be careful with usage of term "UDP" #16
• Introduce schema validation #17