feat: Update trusted-service schema

[SilviaZeta]

Description

Update the schema for the UI template returned by trusted-services (i.e., Python and AI plugins), so as to make it simpler and remove any unused fields. Also support the selection of multiple images in trusted-services.

Given that there are only very few plugins, the plan is to update the UI template for all plugins and redeploy all, rather than maintain the previous schema.

NOTE: THIS BREAKS ALL CURRENT PLUGINS!

relies on gliff-ai/annotate#749 gliff-ai/curate#401
closes #656

Checklist:

Put an x in the boxes that apply to this pull request (you can also fill these out after opening the pull request). If you're unsure about any of these, don't hesitate to leave a comment on this pull request!

• I have read the gliff.ai Contribution Guide.
• I have requested to pull a branch and not from main.
• I have checked all commit message styles match the requested structure.
• My code follows the style guidelines of this project.
• I have commented my code, particularly in hard-to-understand areas.
• I have performed a self-review of my own code.
• I have assigned 3 or less reviewers.
• New and existing unit tests pass locally with my changes.
• I have added tests that prove my fix is effective or that my feature works.
• My changes generate no new warnings.
• I have made corresponding changes to the documentation.
• New database changes have been committed.
• If appropriate, I have bumped any version numbers.

[SilviaZeta]

NOTE: I've merge this branch into addZoo, because I needed to work with the new plugins schema there.