feat: use dockerized memote setup

[mihai-sysbio]

This PR addresses this comment about using a Docker image of memote.
Moreover, it adds an index.json containing a JSON list of GEMs to be run through the validation pipeline.

[famosab]

Where would the output json for each individual model be saved and re-accessed to enable access to the MEMOTE results?

[mihai-sysbio]

From the JSON, I chose to keep only the total resulting score, not the full JSON, which I thought would be too large.

[famosab]

Ok, that makes sense. However to check for annotations we would need to extract those scores from the MEMOTE json as well. But that should be rather straight forward I think.

[famosab]

I added the following question:

Where would the output json for each individual model be saved an re-accessed to enable access to the MEMOTE results?

This will be relevant for a detailed report later, I think.

[mihai-sysbio]

This will be relevant for a detailed report later, I think.

I'm not sure who would want to see the entire report, and why. Storing large JSONs indefinitely in the results file doesn't sound like the best place, so to find another solution more details about the use-case are needed.

[mihai-sysbio]

In order to save a few Actions runs. I will go ahead and merge this PR.
Any remaining issue should be resolved in the target branch feat/memote. There, the discussion can continue about which JSON scores to isolate in addition to the total score (original discussion).