Allow dynamic change of natively rendered layer (by re-applying transforms)

[philippotto]

URL of deployed dev instance (used for testing):

• https://___.webknossos.xyz

Steps to test:

• open C555_DIAMOND_2f-TPS on the dev instance
• use the new transform-toggle-buttons next to the layers
• the position and zoom should adapt when using the toggle button so that one stays roughly in the same area
• create an annotation
• volume annotation should only be possible when the volume layer is not transformed

TODOs:

• test TPS and affine chaining further
• adapt position when toggling transforms
• adapt zoom when toggling transforms ?
• todo-comments / refactor source/target name mismatch

Issues:

• contributes to #6926

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

• Updated changelog
• Updated documentation if applicable
• Removed dev-only changes like prints and application.conf edits

[daniel-wer]

I did not manage to review a lot, but will continue tomorrow :)

[philippotto]

@daniel-wer I think the PR is ready for a complete review. There was some inverted source<>target semantics in the code which was a bit annoying to clean up. I would recommend to not review commit-by-commit, since lots of changes cancelled out (e.g., I renamed source and target and then swapped the order in another commit + some bug fixes where it was simply wrong). I hope this doesn't complicate the review vastly 🙏

[normanrz]

Nice stuff!