feat: implement workspace management and member invitations

- Added tenant API for managing workspaces, including listing, creating, and inviting members.
- Introduced new models for organizations, workspaces, and workspace memberships in the backend.
- Created frontend components for workspace administration, allowing users to manage workspaces and invite members.
- Updated document listing to support workspace-specific filtering.
- Implemented account settings page for user profile management and password changes.
- Added end-to-end tests for workspace administration and dashboard functionalities.

backend/app/main.py

@@ -9,7 +9,7 @@ from sqlalchemy.exc import OperationalError
 from app.config import settings
 from app.database import Base, engine
 from app.mongo import close_mongo, connect_mongo
-from app.routers import auth, collab, documents, health, templates
+from app.routers import auth, collab, documents, health, templates, tenant
 from app.services.collaboration_service import ensure_collaboration_indexes
 from app.services.document_service import ensure_indexes
 from app.services.template_service import ensure_template_indexes
@@ -57,6 +57,7 @@ app.include_router(auth.router, prefix="/api/v1")
 app.include_router(documents.router, prefix="/api/v1")
 app.include_router(templates.router, prefix="/api/v1")
 app.include_router(collab.router, prefix="/api/v1")
+app.include_router(tenant.router, prefix="/api/v1")
 
 
 @app.get("/")