[WIP] Plasmaglass Tables!

## About The Pull Request
Hey hey people, now you can have pink tables. The scientists on SS13 have really out done themselves today. So far it drops regular glass shards, but tg already has plasma glass shards that I'll try to port once I get around to it.

## Why It's Good For The Game
New thing for people to make, basically a stronger table, but it still breaks when a player stands on it.

## Changelog
🆑
add: Plasmaglass tables
/🆑

code/game/objects/structures/table_frames.dm

@@ -100,6 +100,14 @@
 		to_chat(user, "<span class='notice'>You start adding [B] to [src]...</span>")
 		if(do_after(user, 20, target = src) && B.use(1))
 			make_new_table(/obj/structure/table/bronze)
+	else if(istype(I, /obj/item/stack/sheet/plasmaglass))
+		var/obj/item/stack/sheet/plasmaglass/G = I
+		if(G.get_amount() < 1)
+			to_chat(user, "<span class='warning'>You need one plasmaglass sheet to do this!</span>")
+			return
+		to_chat(user, "<span class='notice'>You start adding [G] to [src]...</span>")
+		if(do_after(user, 20, target = src) && G.use(1))
+			make_new_table(/obj/structure/table/plasmaglass)
 	else
 		return ..()