Add Timer.java

plugin/src/main/java/com/alttd/essentia/util/Timer.java

@@ -0,0 +1,17 @@
+package com.alttd.essentia.util;
+
+import com.alttd.essentia.EssentiaPlugin;
+
+public class Timer {
+
+    public Timer(String id, Runnable runnable) {
+        long startTime = System.currentTimeMillis();
+
+        runnable.run();
+
+        long duration = System.currentTimeMillis() - startTime;
+
+        EssentiaPlugin.instance().getLogger().info("Loading " + id + " took " + duration + "ms");
+    }
+
+}