Core/BattlegroundIC:

* Fixed Catapults
* Fixed Graveyards
* Fixed Cannons on Gunships
* More Blizzlike Teleport to Gunship
* Fixed Gunship Teleport to Hangar

Closes https://github.com/TrinityCore/TrinityCore/issues/12323 and https://github.com/TrinityCore/TrinityCore/issues/9557

But it's not yet finished...

Missing waypoints (captains on transport)
Some hacks... (like in spell_ioc_gunship_portal)
@joschiwald It is used as target for the teleport to gunship spell :)

ServerToClient: SMSG_SPELL_GO (0x09D8)
Target Flags: Unit (2)
[0] hitGUID: Full: 0x0 Type: Unit Entry: 34984 Low: 0
MS Time: 1089455072
Cast Flags: PendingCast, Unknown2, Unknown3, Unknown7 (269)
CastCount: 0
Spell ID: 66637
casterUnitGUID: Full: 0x0Type: Player Low: 0
CasterGUID: Full: 0x0Type: Player Low: 0
targetGUID: 0x0
ItemTargetGUID: 0x0
UnkGUID: 0x0

ServerToClient: SMSG_MOVE_TELEPORT (0x0B39)
Counter: 45
Transport Guid: Full: 0x0 Type: MOTransport Low: x
Transport Position: X: 0 Y: 0 Z: 0 O: 0
Position: X: 7,305609 Y: -0,095246 Z: 34,51022 O: 3,159046
Guid: Full: 0x0Type: Player Low: 0