Makes the Queen's point purple (#6302)

# About the pull request
Makes the Queen's point purple
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# Explain why it's good for the game
Makes it distinguishable from other points, It also looks cool (same
color as Queen Eye point except everyone can see it)
# Testing Photographs and Procedure
<summary>Screenshots & Videos</summary>



https://github.com/cmss13-devs/cmss13/assets/59925169/eba99004-09e6-49d5-a7a7-f68b05067180




# Changelog
:cl:
qol: Changed the Queen's pointing color to purple
/:cl:

code/modules/mob/living/carbon/xenomorph/castes/Queen.dm

@@ -943,3 +943,11 @@
 /mob/living/carbon/xenomorph/queen/alter_ghost(mob/dead/observer/ghost)
 	ghost.icon = queen_standing_icon
 	return ..()
+
+/mob/living/carbon/xenomorph/queen/point_to_atom(atom/target_atom, turf/target_turf)
+	recently_pointed_to = world.time + 1 SECONDS
+
+	var/obj/effect/overlay/temp/point/big/greyscale/point = new(target_turf, src, target_atom)
+	point.color = "#a800a8"
+
+	visible_message("<b>[src]</b> points to [target_atom]", null, null, 5)