[Feature] Create slices for Meshery UI

[nebula-aac]

Current Behavior

To test appropriately on Redux.js Toolkit slices, which will help define all the slices and whether they are needed for Meshery UI or not. This means the ability to read through and consolidate slices if need be for a purpose.

Desired Behavior

• Convert the existing redux action creators and reducers objects to slices
• Define the reducers appropriately
• Consolidate or remove slices that might not be necessary
• Export for public use

Implementation

Acceptance Tests

Mockups

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