Blueprints Rework (#18947)

Reworks blueprints to use an eye component for area selection and
changing. Blueprints will now work on whichever overmap site they spawn
on if overmap is enabled, though currently they have only been added to
the Horizon.

Adds shuttle-modifying blueprints for altering shuttle areas and
exoplanet outpost blueprints for creating areas on exoplanets. A set of
outpost blueprints and a lockbox containing blueprints for the Horizon's
shuttles have been added to the CE's locker.

Moves eye creation to a component.

Ported from:
https://github.com/NebulaSS13/Nebula/pull/465
https://github.com/NebulaSS13/Nebula/pull/564
https://github.com/NebulaSS13/Nebula/pull/3046

code/datums/components/eye/_eye.dm

@@ -0,0 +1,84 @@
+/datum/component/eye
+	///The actual eye mob linked to the component
+	var/mob/abstract/eye/component_eye
+	///What type of /mob/abstract/eye is used
+	var/eye_type = /mob/abstract/eye
+	///The mob currently looking through the eye
+	var/mob/current_looker
+
+	///Actions used to pass commands from the eye to the holder. Must be subtypes of /datum/action/eye
+	///Base type of the action, all subtypes of this are added to actions.
+	var/action_type
+	///The actions available to the eye
+	var/list/actions = list()
+
+/datum/component/eye/Destroy()
+	unlook()
+	QDEL_LIST(actions)
+	. = ..()
+
+/datum/component/eye/proc/look(var/mob/new_looker, var/list/eye_args)
+	if(new_looker.eyeobj || current_looker)
+		return FALSE
+	LAZYINSERT(eye_args, get_turf(current_looker), 1) //Make sure that a loc is provided to the eye
+	if(!component_eye)
+		component_eye = new eye_type(arglist(eye_args))
+	current_looker = new_looker
+	component_eye.possess(current_looker)
+
+	if(action_type)
+		for(var/atype in subtypesof(action_type))
+			var/datum/action/eye/action = new atype(src)
+			actions += action
+			action.Grant(current_looker)
+
+	//Manual unlooking for the looker
+	var/datum/action/eye/unlook/unlook_action = new(src)
+	actions += unlook_action
+	unlook_action.Grant(current_looker)
+
+	//Checks for removing the user from the eye outside of unlook actions.
+	RegisterSignal(parent, COMSIG_MOVABLE_MOVED, PROC_REF(unlook))
+	RegisterSignal(current_looker, COMSIG_MOVABLE_MOVED, PROC_REF(unlook))
+
+	RegisterSignal(parent, COMSIG_QDELETING, PROC_REF(unlook))
+	RegisterSignal(current_looker, COMSIG_QDELETING, PROC_REF(unlook))
+	RegisterSignal(component_eye, COMSIG_QDELETING, PROC_REF(unlook))
+
+	RegisterSignal(current_looker, COMSIG_MOB_LOGOUT, PROC_REF(unlook))
+	RegisterSignal(current_looker, COMSIG_GLOB_MOB_DEATH, PROC_REF(unlook))
+
+	return TRUE
+
+/datum/component/eye/proc/unlook()
+	if(!isnull(parent))
+		UnregisterSignal(parent, COMSIG_QDELETING)
+		UnregisterSignal(parent, COMSIG_MOVABLE_MOVED)
+
+	if(!isnull(component_eye))
+		UnregisterSignal(component_eye, COMSIG_QDELETING)
+		component_eye.release(current_looker)
+
+	if(!isnull(current_looker))
+		UnregisterSignal(current_looker, COMSIG_MOVABLE_MOVED)
+		UnregisterSignal(current_looker, COMSIG_QDELETING)
+		UnregisterSignal(current_looker, COMSIG_MOB_LOGOUT)
+		UnregisterSignal(current_looker, COMSIG_GLOB_MOB_DEATH)
+		if(current_looker.client)
+			current_looker.client.eye = current_looker
+		current_looker.eyeobj = null
+	QDEL_NULL(component_eye)
+	if(current_looker)
+		for(var/datum/action/A in actions)
+			A.Remove(current_looker)
+	current_looker = null
+
+/datum/component/eye/proc/get_eye_turf()
+	return get_turf(component_eye)
+
+//Every eye created using a subtype of this extension will have this action added for manual unlooking.
+/datum/action/eye/unlook
+	name = "Stop looking"
+	procname = "unlook"
+	button_icon_state = "cancel"
+	target_type = COMPONENT_TARGET