Refactor authentication system to use MongoDB

- Removed Entity Framework Core identity schema and related migrations.
- Introduced MongoDB-based authentication service with user seeding functionality.
- Updated Program.cs to configure authentication and authorization using cookies.
- Created new Login.razor component for user login interface.
- Added RedirectToLogin component for handling unauthorized access.
- Updated Dockerfile and docker-compose files for development and production environments.
- Removed SQLite connection strings and related configurations.
- Added MongoDB connection settings in appsettings.json and Docker configurations.
- Implemented IMongoAuthService interface and MongoAuthService class for user management.
- Created MongoAuthUser model for MongoDB user representation.

appsettings.json

@@ -1,7 +1,4 @@
 {
-  "ConnectionStrings": {
-    "DefaultConnection": "Data Source=Data/app.db;Cache=Shared"
-  },
   "MongoDb": {
     "ConnectionString": "mongodb://localhost:27017",
     "DatabaseName": "worktracker"