Refactors CTF (#74342)

## About The Pull Request
CTF code is rather infamous for being poor and hard to actually work
with, I wanted to add a feature for a mapping march project but the code
would not allow for it, so here we are refactoring the entire thing.
## Why It's Good For The Game

Replaces some really bad code with slightly less bad code. Should make
it much easier to add features onto CTF in the future.
## Changelog
🆑
refactor: CTF has been entirely refactored.
fix: Respawn times for CTF now work.
qol: CTF players are alerted during control point games when one team is
half way to winning.
admin: CTF instagib mode can now be toggled from the secrets panel.
/🆑

code/modules/admin/verbs/debug.dm

@@ -737,7 +737,7 @@
 	set name = "Unload CTF"
 	set desc = "Despawns the majority of CTF"
 
-	toggle_id_ctf(usr, unload=TRUE)
+	toggle_id_ctf(usr, CTF_GHOST_CTF_GAME_ID, unload=TRUE)
 
 /client/proc/run_empty_query(val as num)
 	set category = "Debug"