[READY FOR REVIEW] I killed bubblegum on hard mode and all I got was this stupid medal. Adds hard mode to megafauna. (#22016)

* hard mode stuff

* further progress

* more progress

* pausing work to fix bug

* lets pr this mess

* more progress saving as vacation soon

* sleep_check_qdel

* saving work

* medals into deconflicting

* icons

* Fix compilings, medals

* Apply suggestions from code review

Co-authored-by: Henri215 <77684085+Henri215@users.noreply.github.com>

* yes

* Apply suggestions from code review

Co-authored-by: Henri215 <77684085+Henri215@users.noreply.github.com>

* earliest of the returns

* icons

* Apply suggestions from code review

Co-authored-by: Contrabang <91113370+Contrabang@users.noreply.github.com>

* Update code/modules/mob/living/simple_animal/hostile/megafauna/megafauna.dm

Co-authored-by: Contrabang <91113370+Contrabang@users.noreply.github.com>

* ah lateload, my beloved and hated with no debug points

* todoops

* requested changes

* move medals / move comment

* guh

---------

Co-authored-by: Henri215 <77684085+Henri215@users.noreply.github.com>
Co-authored-by: Contrabang <91113370+Contrabang@users.noreply.github.com>

code/game/objects/effects/landmarks.dm

@@ -107,6 +107,18 @@ INITIALIZE_IMMEDIATE(/obj/effect/landmark/awaystart) //Without this away mission
 /obj/effect/landmark/spawner/rev
 	name = "revenantspawn"
 	icon_state = "Rev"
+	
+/obj/effect/landmark/spawner/bubblegum_arena
+	name = "bubblegum_arena_human"
+	icon_state = "Explorer"
+
+/obj/effect/landmark/spawner/bubblegum
+	name = "bubblegum_arena_bubblegum"
+	icon_state = "bubblegumjumpscare"
+
+/obj/effect/landmark/spawner/bubblegum_exit
+	name = "bubblegum_arena_exit"
+	icon_state = "bubblegumjumpscare"
 
 /obj/effect/landmark/spawner/syndie
 	name = "Syndicate-Spawn"