Split `requirements.txt` into `requirements-lint.txt` and `requirements-test.txt`

### Description

To optimize the project setup and ensure that only the necessary dependencies are included in the production environment, we need to separate the dependencies into two distinct files:

- `requirements.txt`: For production dependencies only.
- `requirements-lint.txt`: For static code analysis dependencies.
- `requirements-test.txt`: For testing and code coverage dependencies.
