Added .gitattributes to enforce LF line ending

[niko091]

Description

Added .gitattributes file to standardize line endings across the repository, enforcing LF for text files.

This prevents cross-platform formatting issues, unwanted CRLF/LF diff noise in future Pull Requests, and script execution failures on Unix-like environments.

To apply the new line-ending rules to all existing files in the repository:

git add --renormalize .
and commit it

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Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.

If you are unclear about any of the above checks, have a look at our documentation here.