Start moving security level over to shared

Author: weeryan17

src/main/java/com/cascadebot/shared/SecurityLevel.java

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2019 CascadeBot. All rights reserved.
+ * Licensed under the MIT license.
+ */
+
+package com.cascadebot.shared;
+
+/**
+ * Security levels defined by Role IDs or User IDs, A level can be defined by an unlimited amount of roles
+ * and users. Security levels are declared in ascending order.
+ */
+public enum SecurityLevel {
+    STAFF,
+    DEVELOPER,
+    OWNER;
+
+    public boolean isAuthorised(SecurityLevel level) {
+        return level.ordinal() <= this.ordinal();
+    }
+
+}