Added /message commands (#1372)

* Added /message command family

- raw
- post (and post-with-message)
- edit (and edit-with-message)

* CR simplified subcommand setup

* CR renamed confusing method names

Author: Zabuzard

application/src/main/java/org/togetherjava/tjbot/features/Features.java

@@ -39,6 +39,7 @@
 import org.togetherjava.tjbot.features.mathcommands.TeXCommand;
 import org.togetherjava.tjbot.features.mathcommands.wolframalpha.WolframAlphaCommand;
 import org.togetherjava.tjbot.features.mediaonly.MediaOnlyChannelListener;
+import org.togetherjava.tjbot.features.messages.MessageCommand;
 import org.togetherjava.tjbot.features.moderation.BanCommand;
 import org.togetherjava.tjbot.features.moderation.KickCommand;
 import org.togetherjava.tjbot.features.moderation.ModerationActionsStore;
@@ -203,6 +204,7 @@ public static Collection<Feature> createFeatures(JDA jda, Database database, Con
         features.add(new BookmarksCommand(bookmarksSystem));
         features.add(new ChatGptCommand(chatGptService, helpSystemHelper));
         features.add(new JShellCommand(jshellEval));
+        features.add(new MessageCommand());
 
         FeatureBlacklist<Class<?>> blacklist = blacklistConfig.normal();
         return blacklist.filterStream(features.stream(), Object::getClass).toList();