refactors clickcatchers/parallax/fullsceren (#15460)

* :)

* that

* move those there

* refactor that too

* wew

* stuff

* almost.

* sigh

* just need speed

* stuf

* pain

* hm

* tweaks

* that

* eh

* wack

* a

* done

* that's important

* wacky

* all that

* fixes

* typo

* that

* a

* funny

* that

* that

* woo

* help im losing my fucking mind

* okay

* fix

code/_rendering/mob.dm

@@ -0,0 +1,21 @@
+/**
+ * initializes screen rendering. call on mob new
+ */
+/mob/proc/init_rendering()
+
+/**
+ * loads screen rendering. call on mob login
+ */
+/mob/proc/reload_rendering()
+	if(!client.parallax_holder)
+		client.CreateParallax()
+	else
+		client.parallax_holder.Reset(force = TRUE)
+	client.update_clickcatcher()
+	reload_fullscreen()
+
+/**
+ * destroys screen rendering. call on mob del
+ */
+/mob/proc/dispose_rendering()
+	wipe_fullscreens()