Fixing E2E, API & litmusctl tests for ChaosCenter according to new terminologies & functionalities

[Jonsy13]

Proposed changes

Summarize your changes here to communicate with the reviewers and make sure to put the link of the related issue

This PR -
- Fixes the existing e2e tests for ChaosCenter according to new terminologies & functionalities
- Deprecates the tests for Data sources/Dashboards
- Fixes the litmusctl tests & adds more tests for create project & disconnect chaos-delegate command.
- Fixes API tests according to new schema changes.

Tested Run for E2E tests - https://github.com/Jonsy13/e2e-fix-test/actions/runs/2841570463
Tested Run for litmusctl tests - https://github.com/Jonsy13/e2e-fix-test/actions/runs/2866039515
Tested Run for API tests - https://github.com/Jonsy13/e2e-fix-test/actions/runs/2868193224

How has this been tested:

• Test environment
  • GKE
  • AWS
  • OpenShift
  • KinD/k3s/k3d cluster
  • Others
• Tested with production environment ( For ChaosCenter Tests )
• Have not tested

Types of changes

What types of changes does your code introduce to Litmus? Put an x in the boxes that apply

• New feature (non-breaking change which adds functionality)
• Bugfix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices applies)

Checklist

Put an x in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before merging your code.

• I have read the CONTRIBUTING doc
• I have signed the commit for DCO to be passed.
• I have added necessary documentation (if appropriate)
• I have added Screenshots or Terminal snippets in the PR comment to validate the successful execution of changes

Documentation

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• data-cy=* parameters have been added in codebase ( ChaosCenter Tests )
• data-cy=* parameters need to be added in codebase ( ChaosCenter Tests )
• No updates required.

Code Review

• Does the test handle fatal exceptions, ie. uncaught exceptions from 3rd party library (if any)

Issue

• Tasks in issue are checked off

Dependency

• Please add the links to the dependent PR need to be merged before this (if any).

Special notes for your reviewer: