Add Eval script

tools/Eval.user.js

@@ -0,0 +1,22 @@
+// ==UserScript==
+// @name        Eval
+// @namespace   Violentmonkey Scripts
+// @match       https://multiplayerpiano.net/*
+// @grant       none
+// @version     1.0
+// @author      Hri7566
+// @description 4/21/2023, 7:12:33 AM
+// ==/UserScript==
+
+MPP.client.on("a", msg => {
+  if (msg.p._id !== MPP.client.getOwnParticipant()._id) return;
+  if (!msg.a.startsWith(">")) return;
+  let out;
+  try {
+    out = eval(msg.a.substring(1));
+  } catch (err) {
+    out = `❌ ${err}`;
+  }
+
+  MPP.client.sendArray([{m: 'a', message: `\u034f✔️ ${typeof out} ${out}`}])
+});