[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/modules/client/preference/preferences.dm

@@ -89,6 +89,7 @@ GLOBAL_LIST_INIT(special_role_times, list( //minimum age (in days) for accounts
 		"1016" = 100, // CHANNEL_FIREALARM
 		"1015" = 100, // CHANNEL_ASH_STORM
 		"1014" = 100, // CHANNEL_RADIO_NOISE
+		"1013" = 100 // CHANNEL_BOSS_MUSIC
 	)
 	/// The volume mixer save timer handle. Used to debounce the DB call to save, to avoid spamming.
 	var/volume_mixer_saving = null