[WEB-2357] fix: remove viewer role from the platform

[NarayanBavisetti]

Issue Link: WEB-2357

Summary by CodeRabbit

• New Features

  • Introduced a comprehensive structure for managing user permissions, including new enumerations and types for better role management.
  • Added hooks and services to facilitate user permission management within the application.

• Improvements

  • Enhanced role-based access control by tightening permissions across various endpoints, limiting access to specific user roles.
  • Streamlined the permission management system, making it easier to handle user permissions dynamically.

• Bug Fixes

  • Corrected role assignments and default values for project and workspace members, ensuring consistent access levels.

• Documentation

  • Updated documentation to reflect changes in user permission structures and access controls.

Summary by CodeRabbit

• New Features

  • Enhanced role-based access control for inbox issues, restricting access and editing capabilities based on updated role thresholds.
  • Introduced a new state management store for user permissions, streamlining permission handling within workspaces and projects.

• Bug Fixes

  • Corrected default role assignments for new members in workspaces and projects to align with updated role definitions.

• Documentation

  • Updated TypeScript declarations to reflect changes in user role management and permissions across various interfaces.

• Chores

  • Removed obsolete VIEWER role from the permission system to streamline user access levels.