[Feature] Finish converting styles to use MUI v5 in MeshModelRegistry

[nebula-aac]

Current Behavior

The MeshModelRegistry in Meshery UI is incomplete. There are still imports of using Material UI v4, and the rest of components in MesherModelComponent.js will needs to be converted as well.

Files:

• https://github.com/meshery/meshery/blob/master/ui/components/MeshModelRegistry/MeshModel.style.js
• https://github.com/meshery/meshery/blob/master/ui/components/MeshModelRegistry/MeshModelComponent.js

Desired Behavior

• Consolidate styles if need be
• Remove unused styles

Implementation

Acceptance Tests

Mockups

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