## About The Pull Request
- Improves duplication code significantly
- Removes 'perfectcopy', 'newloc', 'nerf' and 'holoitem' args. These
were made for holodeck items, but holodeck items do not use this proc so
it's since been unused.
- Adds many things to duplicate forbidden vars, such as external organs
(and fixes internal organs), overlays, and signals. The signal part is
what broke basic things for duplicated mobs, such as dying, huds, and
lying down.
- Duplicated mobs now properly carry over the identity of the old mob
without losing anything in the process, and now actually work as a mob,
with visible HUDs and everything. They also carry implants over now.
- Duplicated mobs also now no longer cut all their contents and rebuild
the entire mob, they don't carry overlays at all (so we don't have the
problems that come along with it, like clothing sprites from clothes
that don't exist).
- As a minor detail, makes DuplicateObject use snake_case instead, and
makes duplicate_forbidden_vars protected.
- Removes copy_contents_to because it's unused. It was originally meant
for Holodeck, but holodecks now use map templates so it's no longer used
in-game.


## Why It's Good For The Game
Closes https://github.com/tgstation/tgstation/issues/42212
Duplicating mobs no longer gives a broken mob, which was a common
problem with cloning pods (the admin pods, that you drop down onto
people).
Updates very old code to modern code standards.
This PR was made to help out
https://github.com/tgstation/tgstation/pull/71141 too, the author of
that PR is aware of this one.
## Changelog
🆑
refactor: Duplicating mobs now should now give properly functioning
mobs, as duplications in general have been reworked. Admins can feel
free to use the pod feature on people.
/🆑
Converts most spans into span procs. Mostly used regex for this and sorted out any compile time errors afterwards so there could be some bugs.
Was initially going to do defines, but ninja said to make it into a proc, and if there's any overhead, they can easily be changed to defines.
Makes it easier to control the formatting and prevents typos when creating spans as it'll runtime if you misspell instead of silently failing.
Reduces the code you need to write when writing spans, as you don't need to close the span as that's automatically handled by the proc.
(Note from Lemon: This should be converted to defines once we update the minimum version to 514. Didn't do it now because byond pain and such)
* Ports paradise's modular buildmode
* Axes logout callback of buildmode
* AnturK's changes
- Code formatting
- Gives mob to throw args
- Selection overlays are on ABOVE_LIGHTING_PLANE to be visible on space
Other:
- Doubleclicks of observers and AI no longer "double-tap" click
intercepts