Links: Remove dead links upon entity deletion

[martastain]

Changes

Continuous clean-up

Upon project-level entity deletion, all its links should be removed. This is done by calling ayon_server.helpers.entity_links.remove_entity_links function (new)

Deep clean-up

Clean-up procedure for remaining dead links could be done by calling ayon_server.helpers.entity_links.remove_dead_links.
This function is not yet exposed, but will become a part of a maintenance procedure.

Until then, it is possible to do that manually when needed:

1. Enter the python shell inside the server container: docker compose exec server python
2. Paste the following snippet and execute the script:

import asyncio

from ayon_server.initialize import ayon_init
from ayon_server.helpers.entity_links import remove_dead_links

async def main():
    await ayon_init()
    await remove_dead_links("My_project")

asyncio.run(main())

[jakubjezek001]

I have tested remove_dead_links function as described for container python script and it was working as expected. All my dead links are gone and GraphQL works now as expected. Thank you!