Add .gitattributes for consistent LF line endings

.gitattributes

@@ -0,0 +1,10 @@
+# Normalize line endings to LF in the repository
+* text=auto eol=lf
+
+# Force binary files to not be modified
+*.png binary
+*.jpg binary
+*.jpeg binary
+*.ico binary
+*.zip binary
+*.gz binary