Add test file to Commands package (#6)

* Add test file to package

* fix NaN

* fix TS2691

Author: bot174

scripts/commands/commands-tests.ts

@@ -0,0 +1,11 @@
+import { Commands } from "./index.js";
+
+let timerA = Date.now();
+Commands.run("say Hello World");
+console.warn(`Commands.run time: ${Date.now() - timerA} ms`);
+
+let timerB = Date.now();
+Commands.runAsync("say Hello World in async");
+console.warn(`Commands.runAsync time: ${Date.now() - timerB} ms`);
+
+console.log("End of test");