chore: add .gitattributes file

Add initial .gitattributes file to standardize line endings and file handling across different operating systems.

This will help prevent issues with line ending inconsistencies between developers working on different platforms.

.gitattributes

@@ -0,0 +1,12 @@
+# Documentation
+*.html linguist-documentation
+docs/* linguist-documentation
+docs/examples/* linguist-documentation
+docs/md_v2/* linguist-documentation
+
+# Explicitly mark Python as the main language
+*.py linguist-detectable=true
+*.py linguist-language=Python
+
+# Exclude HTML from language statistics
+*.html linguist-detectable=false