Merge remote-tracking branch 'origin/master' into temp-asset-browser-catalogs

Cleanup: clang-tidy warnings in UUID code

Use C++ version of C headers, and avoid static function call on instance.

No functional changes.

Blenlib: introduce a UUID type

Add `BLI_uuid` and `DNA_uuid_types.h` with a UUID implementation
following RFC4122 (https://datatracker.ietf.org/doc/html/rfc4122.html).

The following features are implemented:
- A struct of 128 bits that can be used in DNA definitions.
- Generation of version 4 UUIDs, that is, purely random ones.
- UUID equality function.
- String to UUID and UUID to string conversion functions that are
compatible with RFC4122.
- C++ stream operator that outputs the UUID as string.

This UUID will be used by the asset system, to uniquely identify asset
catalogs.

Reviewed By: Severin, jacqueslucke

Differential Revision: https://developer.blender.org/D12475

Python: extra check on `BPY_thread_save()` to ensure proper GIL handling

Use `_PyThreadState_UncheckedGet()` to check that the current thread is
tracked by Python before checking whether it has the GIL. The latter
will abort when the former is false.

Depsgraph: release GIL when evaluating the depsgraph

Evaluating the dependency graph potentially executes Python code when
evaluating drivers. In specific situations (see T91046) this could
deadlock Blender entirely. Temporarily releasing the GIL when evaluating
the depsgraph resolves this.

This is an improved version of
rBfc460351170478e712740ae1917a2e24803eba3b, thanks @brecht for the diff!

Manifest task: T91046

Cleanup: clarify comment about the use of `_PyThreadState_UncheckedGet()`

No functional changes.

Depsgraph: release GIL when evaluating the depsgraph

Evaluating the dependency graph potentially executes Python code when
evaluating drivers. In specific situations (see T91046) this could deadlock
Blender entirely. Temporarily releasing the GIL when evaluating the depsgraph
resolves this.

Calling the `BPy_BEGIN_ALLOW_THREADS` macro is relatively safe, as it's
a no-op when the current thread does not have the GIL.

Developed in collaboration with @sergey

Manifest task: T91046

Asset Catalogs: change default catalog definition file name

Change the default catalog definition file name from
"single_catalog_definition_file.cats.txt" to "blender_assets.cats.txt".

Cleanup: use same parameter name in declaration & definition

Asset Catalogs: clean up catalog paths before using them

Clean up paths by trimming whitespace and separators
`/path/to/something ` ? `path/to/something`.