Custom Providers And Injection Tokens

# NestJS Custom Providers and Injection Tokens Ever felt like your NestJS applications are becoming a tangled mess of dependencies? You're not alone. As applications grow, managing how different parts of your code talk to each other becomes crucial. This is where NestJS's powerful **Providers and Dependency Injection** system shines. While NestJS offers intelligent defaults, there will come a time when you need more control. That's precisely where **Custom Providers and Injection Tokens** come