[4] Add a way to check the coding style

[radu-md]

What does it fix? WIP Issue https://github.com/code4romania/teacher-workout-backend/issues/4

How has it been tested?

To verify if your .editorconfig file is taking effect, follow these steps:

1. Open a C# file in Visual Studio.

• Make sure the .editorconfig file is present in your solution directory.
• Introduce a deliberate coding style violation (e.g., use tabs instead of spaces for indentation).
• Save the file.
• If your .editorconfig settings are correct, you should see a warning or error in the editor indicating the violation.

2. Inspect Code Style Warnings:

• Build your solution (Ctrl + Shift + B).
• Look for warnings related to code style violations in the “Error List” window.
• If any warnings appear, they indicate that your .editorconfig settings are being enforced.

3. Manually Apply Code Style Fixes:

• Right-click on the file with violations.
• Choose “Format Document” or “Format Selection” from the context menu.
• If the formatting changes align with your .editorconfig settings, it confirms that the file adheres to the specified style.