[refactor]: MobX store structure

[aaryan610]

This PR includes the new MobX store structure

Problem:

1. Multiple sources of data led to data duplicacy and problems in updating/mutating data.
2. De-structuring the data(MobX observables) at the very beginning of the component tree caused unnecessary component re-renders.

Solution:

1. Created one root store to store data which acts as the only source of data for all the sub-stores, including-
   • Label root store with 2 sub-stores- project label store, and workspace label store.
   • Member root store with 2 sub-stores- project member store, and workspace member store.
2. De-structuring the data at the last component of the tree to avoid unnecessary re-rendering.

Other improvements:

1. Created a better folder structure for the stores.
2. Created separate hooks for each store.

Backend

• Removed the issue id structuring in the response.
• Created user specific views for workspace, project, cycle, module.
• Back migrated the workspace members, project members view props.
• Issue relation workflow change.
• Global Views moved to Project Views.
• Payload of the api changed with fields and expand keys.