update highlight.scm and add tags.scm

tree-sitter.json

@@ -6,8 +6,10 @@
       "scope": "source.lscript",
       "path": ".",
       "file-types": [
-        "ls"
+        "ls",
+        "lscript"
       ],
+      "tags": "queries/tags.scm",
       "highlights": "queries/highlights.scm"
     }
   ],