Move Plex to API-driven plugin and fix NoClassDefFoundError on startup

server/src/main/java/dev/plex/command/annotation/CommandParameters.java

@@ -0,0 +1,39 @@
+package dev.plex.command.annotation;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * Storage for a command's parameters
+ */
+@Retention(RetentionPolicy.RUNTIME)
+public @interface CommandParameters
+{
+    /**
+     * The name
+     *
+     * @return Name of the command
+     */
+    String name();
+
+    /**
+     * The description
+     *
+     * @return Description of the command
+     */
+    String description() default "";
+
+    /**
+     * The usage (optional)
+     *
+     * @return The usage of the command
+     */
+    String usage() default "/<command>";
+
+    /**
+     * The aliases (optional)
+     *
+     * @return The aliases of the command
+     */
+    String aliases() default "";
+}