[VariableStore] Features to add (Suggestions are welcome)

[Variable-ind]

Using this issue to list some features to add in newer releases of VariableStore
I'll update them as we move on

• Add a progress bar to the store that indicates how much data is downloaded
• Change code to use the new Pixelorama Api
• Expose Store Link
• Add Itch.io link for manual update
• Add tags to allow pallete, brush, extensions download
• find a way to auto update store_info.txt