Delete annotation

[jotelha]

Hello @EvinJBobby19 , this PR implements annotation deletion (and adds two actions for tag and annotation deletion).
It requires changes to dtoolcore that I have currently sitting in a PR at jic-dtool/dtoolcore#35.
To install the development version of dtoolcore locally, you can use

pip install git+https://github.com/jotelha/dtoolcore.git@2024-12-13-annotations-removal

or clone my fork of dtoolcore

git clone https://github.com/jotelha/dtoolcore.git

checkout the branch 2024-12-13-annotations-removal

git checkout 2024-12-13-annotations-removal

and install the local copy (editable with -e)

pip install -e .

Please check everything makes sense and works for you as before.