Fix zip cmake build variable.
Deleting the host will make pH a dangling pointer, so remove it from mTabMap first.
Remove the extra T2DMap default constructor.

T2DMap currently has two default constructors, remove one.
Remove Host's default constructor, which isn't used.
Fix cmake build.

Add definitions for the APP_* defines and remove a file which was removed
in a previous commit but the merge went poorly.
Merge branch 'zip' of https://github.com/ahmedcharles/Mudlet.git into main_development
Merge branch 'host_fix' of https://github.com/ahmedcharles/Mudlet.git into main_development
Merge branch 't2dmap' of https://github.com/ahmedcharles/Mudlet.git into main_development
Merge branch 'host' of https://github.com/ahmedcharles/Mudlet.git into main_development
Merge branch 'merge_fix' of https://github.com/ahmedcharles/Mudlet.git into main_development