[Scripts] Implement script support for quest 11085
Please note that this will only support one spawn location of the
escorted NPC. The other escort paths will be added once the database
will have proper spawn locations.
Credit to @xfurry [2998]

[Dependencies] Fix compilation related to a static cast
[Scripts] Implement script support for quest 11673. (Credit to xfurry
[2999])
Also fixed compilation errors.
[Scripts] Implement script support for quests 13284 and 13301
[Scripts] Implement script support for quests 13221, 13229, 13481 and
13482.
Credit to @xfurry [3004]