Adds BSQL thread limit to configuration options

code/controllers/configuration/entries/dbconfig.dm

@@ -44,4 +44,8 @@
 	min_val = 0
 	protection = CONFIG_ENTRY_LOCKED
 
+/datum/config_entry/number/bsql_thread_limit
+	config_entry_value = 50
+	min_val = 1
+
 /datum/config_entry/flag/bsql_debug

code/controllers/subsystem/dbcore.dm

@@ -76,7 +76,7 @@ SUBSYSTEM_DEF(dbcore)
 	var/address = CONFIG_GET(string/address)
 	var/port = CONFIG_GET(number/port)
 
-	connection = new /datum/BSQL_Connection(BSQL_CONNECTION_TYPE_MARIADB, CONFIG_GET(number/async_query_timeout), CONFIG_GET(number/blocking_query_timeout))
+	connection = new /datum/BSQL_Connection(BSQL_CONNECTION_TYPE_MARIADB, CONFIG_GET(number/async_query_timeout), CONFIG_GET(number/blocking_query_timeout), CONFIG_GET(number/bsql_thread_limit))
 	var/error
 	if(QDELETED(connection))
 		connection = null

config/dbconfig.txt

@@ -38,5 +38,8 @@ ASYNC_QUERY_TIMEOUT 10
 ## Must be less than or equal to ASYNC_QUERY_TIMEOUT
 BLOCKING_QUERY_TIMEOUT 5
 
+## The maximum number of additional threads BSQL is allowed to run at once
+BSQL_THREAD_LIMIT 50
+
 ## Uncomment to enable verbose BSQL communication logs
 #BSQL_DEBUG