Add `.gitattributes` file to handle line endings

[jbampton]

https://docs.github.com/en/get-started/getting-started-with-git/configuring-git-to-handle-line-endings

[aniruddhaadak80]

Please assign this to me @jbampton .

[jbampton]

Showing great enthusiasm @aniruddhaadak80 :)

I just assigned you to the other issue.

Let us solve one issue at a time.

If you solve the other issue you can have this issue if it is still open.

Thanks.