Adding users -> roles tests automation

[pranavgoel29]

• Added helper functions for roles section tests.
• Configured tsconfig.json for the tests folder linting.
• Improved the overall code to use proper TS literals.

Cases covered in this PR.

Verify Page Title

• Confirm that the page title matches "Parseable | Users."

Roles Table

• Check that a "Roles" heading is present on the page.
• Verify that a table is visible with columns for "Role" and "Access."
• Ensure that the roles table has rows with content.

Create Role Button

• Check that the "Create Role" button is visible.

Create Role Modal

• Confirm that clicking the "Create Role" button opens the "Create Role" modal.
• Create Role Modal Elements:
  • Check for presence of required fields, such as a role name input, privilege dropdown, "Create" button (disabled initially), and "Cancel" button.
  • Verify that clicking "Cancel" closes the modal.
• Create a New Role:
  • Ensure any existing "playwright-test-role" is deleted before testing.
  • Create a new role, wait for it to appear in the table, and confirm its "admin" access level.
• Delete a Newly Created Role:
  • Delete the newly created "playwright-test-role" and verify its removal from the table.

Set Default OIDC Role Button

• Confirm that the "Set Default OIDC Role" button is visible.

Navigate to Documentation

• Verify that the "Docs" button is visible.
• Confirm that clicking the "Docs" button opens a new page with the correct heading, "Role Based Access Control."