Create interface for the registry of all comannds of a bot

src/main/java/org/telegram/telegrambots/api/commands/ICommandRegistery.java

@@ -0,0 +1,42 @@
+package org.telegram.telegrambots.api.commands;
+
+import java.util.Map;
+
+/**
+ *
+ */
+public interface ICommandRegistery {
+
+    /**
+     * register a command
+     *
+     * @param command the command to register
+     * @return        whether the command could be registered, was not already registered
+     */
+    boolean register(Command command);
+
+    /**
+     * register multiple commands
+     *
+     * @param commands commands to register
+     * @return         map with results of the command register per command
+     */
+    Map<Command, Boolean> registerAll(Command... commands);
+
+    /**
+     * deregister a command
+     *
+     * @param command the command to deregister
+     * @return        whether the command could be deregistered, was registered
+     */
+    boolean deregister(Command command);
+
+    /**
+     * deregister multiple commands
+     *
+     * @param commands commands to deregister
+     * @return         map with results of the command deregistered per command
+     */
+    Map<Command, Boolean> deregisterAll(Command... commands);
+
+}