Add .editorconfig and .gitattributes for consistent coding standards

[mariosfish]

This links with issue #138

To help ensure consistent coding standards and improve cross-platform collaboration, I propose adding the following files to the repository:

1 .editorconfig – Helps enforce consistent indentation, line endings, charset, etc., across different editors and IDEs.

2 .gitattributes – Useful for defining how Git should handle line endings and text encoding, and for marking binary files.

Benefits:

Prevents common formatting issues (e.g., mixed tabs/spaces, inconsistent line endings).

Simplifies collaboration by aligning developer environments automatically.

Reduces noise in diffs caused by inconsistent formatting.