BUG FIX: Workspace Delete Functionality

[elraphty]

Right now, when we try to delete a Workspace it returns a 500 error because it can't delete the workspace users and roles from the database. We want to fix the soft delete a Workspace functionality.

To Reproduce
Steps to reproduce the behavior:

1. Go to sphinx-tribes fontend
2. Create a Workspace
3. Click on the Manage button
4. Click on the Delete button
5. See Error: Could not delete workspace

Expected behavior

When the Delete Workspace button is clicked, and the delete action is confirmed the workspace should be soft deleted from the database.

Acceptance Criteria

• I have tested on Chrome desktop
• I have rebased and tested locally before submitting my PR
• I can submit a PR within 1 day of taking the bounty

[aliraza556]

@elraphty assign me?

[MuhammadUmer44]

@elraphty please assign me?

[MahtabBukhari]

@elraphty Could you please assign me?

[MirzaHanan]

@elraphty Cloud you are assign me?

[elraphty]

Good day guys, I'm working on these next few PRs myself.