Migrate to UUID usage

src/main/java/com/lishid/openinv/utils/UUIDUtil.java

@@ -0,0 +1,27 @@
+package com.lishid.openinv.utils;
+
+import java.util.Arrays;
+import java.util.Map;
+import java.util.UUID;
+
+import org.bukkit.Bukkit;
+
+public class UUIDUtil {
+    public static UUID getUUIDOf(String name) {
+        UUID uuid = null;
+
+        UUIDFetcher fetcher = new UUIDFetcher(Arrays.asList(name));
+        Map<String, UUID> response;
+
+        try {
+            response = fetcher.call();
+            uuid = response.get(name);
+        }
+        catch (Exception e) {
+            Bukkit.getServer().getLogger().warning("Exception while running UUIDFetcher");
+            e.printStackTrace();
+        }
+
+        return uuid;
+    }
+}