refactor(sh-admin): improved error handling and dynamic user actions in admin dashboard

[JoelJacobStephen]

Ticket

Closes HFE-514

Description

This PR focuses on improving error handling and user actions in the admin dashboard. Recurring errors returned from the backend are stored, and are paired with appropriate error messages to improve error handling in the dashboard. The action bar in the users page is made to be more dynamic where buttons appear only when the action is relevant based on the selection made by the user

Example: Make Admin button is not shown when selected users are all admins

Objectives

• A better system to handle errors by recording the different types of errors returned from the backend.
• Assign appropriate error messages to the errors recorded.
• Implement a dynamic action bar in the users page which dynamically reveals and hides action buttons based on relevancy.

Recording

Screen.Recording.2024-05-07.at.10.49.43.AM.mov

Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• All the tests have passed

[nivedin]

@JoelJacobStephen is this PR focused only on some admin and user error management because there are other errors related to workspace and settings left.

[JoelJacobStephen]

@nivedin The newly introduced error handling is only for common errors that are returned from the backend through graphql queries. It does not replace error messages created solely in the frontend (Example: There are error messages that are created in the frontend by only checking if the graphql query has been successful or not without checking the specific error message returned in the graphql response). I will slowly be moving to this style of error handling moving forward in the dashboard.