Allow moving zone position

[SaintCirno9]

Summary

SUMMARY: [Features] "Allow moving zone position"

Purpose of change

Currently, the only way to change the position of a zone is to re-edit the zone, but in many cases it is more convenient to move the area directly than to re-edit. So it's a good idea to add a feature to move the zone directly.

Describe the solution

Add a new option below the option "Edit position", now the window looks like this:

You can then use the keyboard to move the zone:

or mouse:

If z-levels are enabled, moving zone across z-levels can also function, as shown in the gif above.

Describe alternatives you've considered

Testing

• Create a new zone, select it and move it around, the zone saves fine.

• Load an old save with existing zones, those zones can also be moved.

Additional context

[Coolthulhu]

Nice!

Does it work with zones on vehicles? I see the following cases:

• Moving zone from vehicle to map. Should probably "detach", maybe ask.
• Moving zone from map to vehicle. Should probably ask to attach.
• Moving zone from one vehicle tile to another. Should probably not detach.

[Coolthulhu]

/home/runner/work/Cataclysm-BN/Cataclysm-BN/src/game.cpp: In member function ‘void game::zones_manager()’:
Error: /home/runner/work/Cataclysm-BN/Cataclysm-BN/src/game.cpp:6686:108: error: cannot bind non-const lvalue reference of type ‘tripoint&’ to an rvalue of type ‘tripoint’
                         const look_around_result result_local = look_around( false, zone_local_start_point + tripoint_zero,
                                                                                     ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~

For some reason, the center argument is not const. The function has a its own special return value where it could write the "new center", so there is no good reason to have pass-by-nonconst-ref center.
Still, if you want a quick fix, it's OK if you just add a temporary variable, preferably with a TODO: comment summarizing the issue.

[SaintCirno9]

Nice!

Does it work with zones on vehicles? I see the following cases:

• Moving zone from vehicle to map. Should probably "detach", maybe ask.
• Moving zone from map to vehicle. Should probably ask to attach.
• Moving zone from one vehicle tile to another. Should probably not detach.

Because currently vzones only support 1x1 size, so I don't think there is any necessity to enable moving for vehicle zones, I may do that after vzones can be larger.

[Coolthulhu]

/home/runner/work/Cataclysm-BN/Cataclysm-BN/src/game.cpp:6684:67: error: ellipsis preferred over three dots. [cata-text-style,-warnings-as-errors]
                        message_pop.message( "%s", _( "Moving zone..." ) );
                                                                  ^~~
                                                                  …
/home/runner/work/Cataclysm-BN/Cataclysm-BN/src/game.cpp:6979:13: error: Value stored to 'zone_blink' is never read [clang-analyzer-deadcode.DeadStores,-warnings-as-errors]
            zone_blink = blink;
            ^