Creates research costs for some PKA mods (#22748)

* req_tech test

* add req_tech to some PKA mods

* var/requires_whitelist test

* forget a newline

* how do I newline

* remove research reqs

* conform to new /// comment style

---------

Co-authored-by: ZERO-XZB <temp@temp.com>

code/modules/research/designs.dm

@@ -45,3 +45,5 @@ other types of metals and chemistry for reagents).
 	var/list/reagents_list = list()			//List of reagents. Format: "id" = amount.
 	var/maxstack = 1
 	var/lathe_time_factor = 1			//How many times faster than normal is this to build on the protolathe
+	/// Determines whether or not we get to get a design blueprint from a disk
+	var/requires_whitelist = FALSE

code/modules/research/research.dm

@@ -89,6 +89,8 @@ research holder datum.
 /datum/research/proc/DesignHasReqs(datum/design/D)
 	if(D.id in blacklisted_designs)
 		return FALSE
+	if(D.requires_whitelist && !(known_designs[D.id]))
+		return FALSE
 	if(D.req_tech.len == 0)
 		return TRUE
 	for(var/req in D.req_tech)