Research queue (#84731)

## About The Pull Request

<img alt="2dZbpr8MK1"
src="https://github.com/tgstation/tgstation/assets/3625094/dd78feba-224a-41a1-8d4a-83af3a8b68df">


Added an ability to queue up to one node per player in a techweb for an
automatic research.

You can queue up a node only when all requirements are met, but there
are not enough points.

People can't research when there is something in the queue, only add
things to the queue. So a 40 points node can't be researched if someone
queued up a 200 points node ahead of it.

When a node is enqueued by RD, it is placed in front of the queue.

The research button is available when the queue is empty.

TODO:

- [x] Bypass queue when the node cost is zero

## Why It's Good For The Game

No need to stay at the console to wait for the points. No "Research"
button spamming.

## Changelog

🆑
qol: Research nodes can be queued, one per player. RDs can place their
node at the beginning of the queue.
/🆑

code/controllers/subsystem/research.dm

@@ -36,7 +36,7 @@ SUBSYSTEM_DEF(research)
 	var/list/techweb_nodes_experimental = list()
 	///path = list(point type = value)
 	var/list/techweb_point_items = list(
-		/obj/item/assembly/signaler/anomaly = list(TECHWEB_POINT_TYPE_GENERIC = 10000)
+		/obj/item/assembly/signaler/anomaly = list(TECHWEB_POINT_TYPE_GENERIC = TECHWEB_TIER_5_POINTS)
 	)
 	var/list/errored_datums = list()
 	///Associated list of all point types that techwebs will have and their respective 'abbreviated' name.
@@ -102,6 +102,13 @@ SUBSYSTEM_DEF(research)
 
 		techweb_list.last_income = world.time
 
+		if(techweb_list.research_queue_nodes.len)
+			techweb_list.research_node_id(techweb_list.research_queue_nodes[1]) // Attempt to research the first node in queue if possible
+
+			for(var/datum/techweb_node/node as anything in techweb_list.research_queue_nodes)
+				if(node.is_free(techweb_list)) // Automatically research all free nodes in queue if any
+					techweb_list.research_node(node)
+
 /datum/controller/subsystem/research/proc/autosort_categories()
 	for(var/i in techweb_nodes)
 		var/datum/techweb_node/I = techweb_nodes[i]