[MIRROR] Add hotkey and screentip to tracking beacons [MDB IGNORE] (#25528)

* Add hotkey and screentip to tracking beacons (#80142)

## About The Pull Request

Adds RMB to toggle a tracking beacon on/off. Also adds this as a
screentip UI indicator.

## Why It's Good For The Game

Adds a simple interaction so people don't have to pick up things.

## Changelog

🆑
qol: Add RMB hotkey and screentip UI to tracking beacons to toggle them
on/off.
/🆑

* Add hotkey and screentip to tracking beacons

---------

Co-authored-by: Tim <timothymtorres@gmail.com>

code/game/objects/items/devices/beacon.dm

@@ -15,11 +15,19 @@
 		GLOB.teleportbeacons += src
 	else
 		icon_state = "beacon-off"
+	register_context()
 
 /obj/item/beacon/Destroy()
 	GLOB.teleportbeacons -= src
 	return ..()
 
+/obj/item/beacon/add_context(atom/source, list/context, obj/item/held_item, mob/living/user)
+	if(isnull(held_item))
+		context[SCREENTIP_CONTEXT_RMB] = "Toggle beacon"
+		return CONTEXTUAL_SCREENTIP_SET
+
+	return NONE
+
 /obj/item/beacon/proc/turn_off()
 	icon_state = "beacon-off"
 	GLOB.teleportbeacons -= src
@@ -35,6 +43,10 @@
 	to_chat(user, span_notice("You [enabled ? "enable" : "disable"] the beacon."))
 	return
 
+/obj/item/beacon/attack_hand_secondary(mob/user, list/modifiers)
+	attack_self(user)
+	return SECONDARY_ATTACK_CANCEL_ATTACK_CHAIN
+
 /obj/item/beacon/attackby(obj/item/W, mob/user)
 	if(istype(W, /obj/item/pen)) // needed for things that use custom names like the locator
 		var/new_name = tgui_input_text(user, "What would you like the name to be?", "Beacon", max_length = MAX_NAME_LEN)