Local cache of atlases

[alessandrofelder]

Is it worth caching the results of get_downloaded_atlases(), get_atlases_lastversions(), and get_all_atlases_lastversions() somewhere and updating them when model().referesh_data() is called?

Same for

brainrender-napari/brainrender_napari/widgets/atlas_viewer_view.py

Lines 108 to 118 in 37d93e8

	def get_tooltip_text(cls, atlas_name: str):
	"""Returns the atlas metadata as a formatted string,
	as well as instructions on how to interact with the atlas."""
	if atlas_name in get_downloaded_atlases():
	metadata = read_atlas_metadata_from_file(atlas_name)
	metadata_as_string = ""
	for key, value in metadata.items():
	metadata_as_string += f"{key}:\t{value}\n"
	tooltip_text = f"{format_atlas_name(atlas_name)}\
	(double-click to add to viewer)\
	\n{metadata_as_string}"

Originally posted by @IgorTatarnikov in #124 (comment)

[alessandrofelder]

https://doc.qt.io/qt-6/qabstractitemmodel.html#match may come in handy here.