Ports a psionic system from Bay. (#7717)

* Ports a psionic system from Bay.

* Rip out this shitcode.

* shitcoden't

* fixes

* it should work fully now

* Admin fixes

* Remove todos

* remove todos part 2

* Removes psi-armour. We don't need this for now.

* Skrell are now operants. Tweaks coercion.

* Adds thralls.

* Temp removal of psiarmour. Fixes psigrabs.

* Thrall assay.

* fixes

* More fixes

* unused define cleanup

* Log and powers

* Skrell powers are done.

* Update code/modules/psionics/events/mini_spasm.dm

Co-Authored-By: Geeves <ggrobler447@gmail.com>

* Update code/modules/psionics/events/mini_spasm.dm

Co-Authored-By: Geeves <ggrobler447@gmail.com>

* Update code/modules/psionics/equipment/cerebro_enhancers.dm

* did this work???

* jargon

* arrow's fixes

Co-authored-by: Geeves <ggrobler447@gmail.com>

code/modules/psionics/interface/ui.dm

@@ -0,0 +1,14 @@
+/obj/screen/psi
+	icon = 'icons/mob/screen/psi.dmi'
+	var/mob/living/owner
+	var/hidden = TRUE
+
+/obj/screen/psi/New(var/mob/living/_owner)
+	loc = null
+	owner = _owner
+	update_icon()
+
+/obj/screen/psi/Destroy()
+	if(owner && owner.client)
+		owner.client.screen -= src
+	. = ..()