Drop genericobject.{cpp,h} (#9629)

* Drop genericobject.{cpp,h}

This file is not for generic object but for ActiveObject message passing.
Put ownership of the various commands to the right objects and cleanup the related code.

* Protect ServerActiveObject::m_messages_out

* typo fix

src/activeobject.h

@@ -55,6 +55,22 @@ struct ActiveObjectMessage
 	std::string datastring;
 };
 
+enum ActiveObjectCommand {
+	AO_CMD_SET_PROPERTIES,
+	AO_CMD_UPDATE_POSITION,
+	AO_CMD_SET_TEXTURE_MOD,
+	AO_CMD_SET_SPRITE,
+	AO_CMD_PUNCHED,
+	AO_CMD_UPDATE_ARMOR_GROUPS,
+	AO_CMD_SET_ANIMATION,
+	AO_CMD_SET_BONE_POSITION,
+	AO_CMD_ATTACH_TO,
+	AO_CMD_SET_PHYSICS_OVERRIDE,
+	AO_CMD_UPDATE_NAMETAG_ATTRIBUTES,
+	AO_CMD_SPAWN_INFANT,
+	AO_CMD_SET_ANIMATION_SPEED
+};
+
 /*
 	Parent class for ServerActiveObject and ClientActiveObject
 */