Implement team join request functionality with views and actions

- Added join_requests.html template for displaying pending join requests.
- Created join_team.html template for users to submit join requests.
- Implemented request_processed.html template to show the result of join request processing.
- Developed authentication utilities for user session management.
- Introduced convenience redirects for common URL patterns.
- Established team management routes and actions for creating, editing, and joining teams.
- Added functionality for approving and denying join requests with email notifications.
- Enhanced team views to include user permissions and team member details.
- Implemented utility functions for team-related operations such as calculating total points and team rank.

app/views/convenience.py

@@ -0,0 +1,32 @@
+"""
+Router for convenience redirects to simplify common URL patterns.
+"""
+from fastapi import APIRouter
+from fastapi.responses import RedirectResponse
+
+router = APIRouter(tags=["Convenience"])
+
+@router.get("/scan")
+async def scan_redirect():
+    """Redirect /scan to /dashboard/scan"""
+    return RedirectResponse("/dashboard/scan", status_code=303)
+
+@router.get("/login")
+async def login_redirect():
+    """Redirect /login to /auth/login"""
+    return RedirectResponse("/auth/login", status_code=303)
+
+@router.get("/register")
+async def register_redirect():
+    """Redirect /register to /auth/register"""
+    return RedirectResponse("/auth/register", status_code=303)
+
+@router.get("/profile")
+async def profile_redirect():
+    """Redirect /profile to /auth/profile"""
+    return RedirectResponse("/auth/profile", status_code=303)
+
+@router.get("/logout")
+async def logout_redirect():
+    """Redirect /logout to /auth/logout"""
+    return RedirectResponse("/auth/logout", status_code=303)