Core/Gossips: Make MenuID/OptionID consistently use uint32 types (#165)

sql/updates/world/4.3.4/2020_08_03_00_world.sql

@@ -0,0 +1,7 @@
+ALTER TABLE `gossip_menu_option_locale`
+    CHANGE `MenuID` `MenuID` int(11) unsigned NOT NULL DEFAULT '0',
+    CHANGE `OptionID` `OptionID` int(11) unsigned NOT NULL DEFAULT '0';
+
+ALTER TABLE `gossip_menu`
+    CHANGE `MenuID` `MenuID` int(11) unsigned NOT NULL DEFAULT '0',
+    CHANGE `TextID` `TextID` int(11) unsigned NOT NULL DEFAULT '0';