Adds a new asset shelf option (`STORE_ENABLED_CATALOGS_IN_PREFERENCES`
option in RNA) to use the Preferences for storing the enabled catalogs.
This way asset shelf types can decide if for their use-case, they want
to synchronize the enabled catalogs over Blender sessions and files, or
keep the stored locally in the file.
This is important because for example on one hand, it would be annoying
if for brush assets you'd have to enable the visible catalog tabs for
every 3D View and every file, while on the other hand you need that
level of control for the pose library where the catalogs the rigger/
animator cares about varies from project to project, character to
character and shot to shot.
Conceptually this also makes some sense: The new brush assets workflow
synchronizes brush assets and their catalogs across Blender sessions
and files, basically making them globally accessible independent of
the current file/project, so treating the enabled catalogs the same
is consistent.
Previously reviewed in #120264
Pull Request: https://projects.blender.org/blender/blender/pulls/121363
a6ebfb05ad