fix: Model Manager Tab Issues

[blessedcoolant]

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• [?] Optimization

Have you discussed this change with the InvokeAI team?

• No

Description

• Fixed filter type select using images instead of all -- Probably some merge conflict.
• Added loading state for model lists. Handy when the model list takes longer than a second for any reason to fetch. Better to show this than an empty screen.
• Refactored the render model list function so we modify the display component in one area rather than have repeated code.

Other Issues

• The list can get a bit laggy on initial load when you have a hundreds of models / loras. This needs to be fixed. Will make another PR for this.

[psychedelicious]

I fixed a number of conflicts from the Onnx merge