chore: add .gitattributes for consistent line endings and file handling

Configured .gitattributes to normalize text files with LF endings, handle
binary files safely, and improve diff/merge behavior across platforms.
Also ensures accurate language detection and cleaner repository exports.

Signed-off-by: https://github.com/Someshdiwan <[email protected]>

Author: Someshdiwan

.gitattributes

@@ -30,6 +30,7 @@
 *.c          text eol=lf
 *.cpp        text eol=lf
 *.h          text eol=lf
+*.hpp        text eol=lf
 
 # ------------------------------------------------------------------------------
 # Binary files (never touch line endings / no diffs)
@@ -71,7 +72,7 @@
 *.yaml   text
 *.sql    text
 
-# Lockfiles rarely need diffs
+# Lockfile rarely need diffs
 package-lock.json -diff
 yarn.lock        -diff
 pnpm-lock.yaml   -diff
@@ -118,6 +119,12 @@ pnpm-lock.yaml   -diff
 *.md     linguist-detectable=true linguist-language=Markdown
 *.txt    linguist-detectable=true
 
+# C / C++ visibility and language classification
+*.c      linguist-detectable=true linguist-language=C
+*.h      linguist-detectable=true linguist-language=C
+*.cpp    linguist-detectable=true linguist-language=C++
+*.hpp    linguist-detectable=true linguist-language=C++
+
 # Force correct language classification
 *.xml    linguist-language=XML
 *.json   linguist-language=JSON