Refactor command packages

src/main/java/wtf/beatrice/hidekobot/commands/slash/PingCommand.java

@@ -0,0 +1,12 @@
+package wtf.beatrice.hidekobot.commands.slash;
+
+import net.dv8tion.jda.api.events.interaction.command.SlashCommandInteractionEvent;
+import org.jetbrains.annotations.NotNull;
+
+public class PingCommand
+{
+    public PingCommand(@NotNull SlashCommandInteractionEvent event)
+    {
+        event.reply("Pong!").queue();
+    }
+}