chore: add .gitattributes

.gitattributes

@@ -0,0 +1,14 @@
+# Auto detect text files and perform LF normalization
+*        text=auto
+
+
+*.ts    text eol=lf merge=union 
+*.tsx   text eol=lf merge=union 
+*.rs    text eol=lf merge=union 
+*.js    text eol=lf merge=union 
+*.json  text eol=lf merge=union 
+*.debug text eol=lf merge=union 
+
+# Generated codes
+index.js linguist-detectable=false
+index.d.ts linguist-detectable=false