Blender Git Commit Log

Asset Catalogs: loading a catalog definition file

Initial, limited implementation of loading a single asset catalog
definition file. These files are structured as follows:

CATALOG_ID virtual/path/of/catalog
SUBCATALOG_ID virtual/path/of/catalog/child
SOMETHING_ELSE some/unrelated/hierarchy

These virtual paths will be used to show the catalog in a tree
structure; the tree structure itself is not part of this commit. Each
asset will have one catalog ID that determines where in that tree the
asset shows up.

Currently only a single catalog definition file can be read; merging
data from multiple such files, and writing them out again after changes
are made, is for future commits.

This commit only contains the code to load a single file, and unittests
to check that this actually works. No UI, no user-facing functionality
yet.