Enable/Disabled worker jobs in frontend

[hotzenklotz]

This PR adds the frontend part to #7463, i.e. enabling/disabling different UI elements if a certain worker jobs is not supported by that WK instance.

URL of deployed dev instance (used for testing):

• https://___.webknossos.xyz

Steps to test:

• Adjust the worker's supported job commands in the workers table in the Postgres DB
• Check if the corresponding UI feature reacts either by being disabled or hidden altogether

TODOs:

• CONVERT_TO_WKW
• EXPORT_TIFF
• RENDER_ANIMATION
• COMPUTE_MESH_FILE
• COMPUTE_SEGMENT_INDEX_FILE
• FIND_LARGEST_SEGMENT_ID
• INFER_NUCLEI
• INFER_NEURONS
• MATERIALIZE_VOLUME_ANNOTATION

Issues:

• fixes Jobs that are not available for a particular datastore should already be disabled in the frontend #7485

---

(Please delete unneeded items, merge only when none are left open)

• Updated changelog
• Updated migration guide if applicable
• Updated documentation if applicable
• Adapted wk-libs python client if relevant API parts change
• Removed dev-only changes like prints and application.conf edits
• Considered common edge cases
• Needs datastore update after deployment

[hotzenklotz]

@philippotto Can you please review the frontend changes. Thank you.

[philippotto]

mostly looks good, but see my few comments.

[hotzenklotz]

@philippotto I applied your review suggestions / feedback. Please have a look.

[philippotto]

LGTM 👍