🚀 add new stl file padding.nas and update test files.

stl/padding.nas

@@ -0,0 +1,16 @@
+# padding.nas
+# ValKmjolnir 2022/9/4
+
+var leftpad=func(str,len,char=" "){
+    var strlen=size(str);
+    for(var i=strlen;i<len;i+=1)
+        str=char~str;
+    return str;
+}
+
+var rightpad=func(str,len,char=" "){
+    var strlen=size(str);
+    for(var i=strlen;i<len;i+=1)
+        str~=char;
+    return str;
+}