Remove code/__DEFINES/misc.dm (#63879)

This removes code/__DEFINES/misc.dm and moves all the defines to either:

another existing define file
new define file
local .dm file if the define was only used in one file
I also deleted defines that were not being used and added documentation to all of the ones that were moved out of misc.dm

Why was this needed? People were basically using the misc.dm file as a dumpster to toss all their defines into that was creating one giant mess. The defines have been organized into their proper groups and files now.

code/modules/admin/verbs/ert.dm

@@ -1,6 +1,9 @@
 /// If we spawn an ERT with the "choose experienced leader" option, select the leader from the top X playtimes
 #define ERT_EXPERIENCED_LEADER_CHOOSE_TOP 3
 
+///Dummy mob reserve slot for admin use
+#define DUMMY_HUMAN_SLOT_ADMIN "admintools"
+
 // CENTCOM RESPONSE TEAM
 
 /datum/admins/proc/makeERTTemplateModified(list/settings)
@@ -227,3 +230,4 @@
 		log_admin("[key_name(usr)] failed to create a CentCom response team.")
 
 #undef ERT_EXPERIENCED_LEADER_CHOOSE_TOP
+#undef DUMMY_HUMAN_SLOT_ADMIN

code/modules/admin/verbs/playsound.dm

@@ -1,3 +1,8 @@
+//world/proc/shelleo
+#define SHELLEO_ERRORLEVEL 1
+#define SHELLEO_STDOUT 2
+#define SHELLEO_STDERR 3
+
 /client/proc/play_sound(S as sound)
 	set category = "Admin.Fun"
 	set name = "Play Global Sound"
@@ -174,3 +179,8 @@
 		var/client/C = M.client
 		C?.tgui_panel?.stop_music()
 	SSblackbox.record_feedback("tally", "admin_verb", 1, "Stop All Playing Sounds") //If you are copy-pasting this, ensure the 2nd parameter is unique to the new proc!
+
+//world/proc/shelleo
+#undef SHELLEO_ERRORLEVEL
+#undef SHELLEO_STDOUT
+#undef SHELLEO_STDERR