languages(js): recognize .gs as js file

Author: kumawatdarshan

languages.toml

@@ -911,7 +911,7 @@ name = "javascript"
 scope = "source.js"
 injection-regex = "(js|javascript)"
 language-id = "javascript"
-file-types = ["js", "mjs", "cjs", "rules", "es6", "pac", { glob = ".node_repl_history" }, { glob = "jakefile" }]
+file-types = ["js", "mjs", "cjs", "rules", "es6", "pac", "gs", { glob = ".node_repl_history" }, { glob = "jakefile" }]
 shebangs = ["node"]
 roots = [ "package.json", "jsconfig.json" ]
 comment-token = "//"