Created lane feature that should be backwards compatible with non-lane features

src/classes/api/SpearheadApi.lua

@@ -10,7 +10,6 @@ local MissionCompleteListeners = {}
 ---@class SpearheadAPIInternal 
 ---@field notifyMissionComplete fun(zone_name: string)
 
-
 ---@type FullSpearheadAPI
 SpearheadAPI = {
     Stages = {
@@ -25,12 +24,12 @@ SpearheadAPI = {
         getCurrentStage = function()
             return GlobalStageManager.getCurrentStage() or nil
         end,
-        isStageComplete = function(stageNumber)
+        isStageComplete = function(stageNumber, stageLaneIdentifier)
             if type(stageNumber) ~= "number" then
                 return false, "stageNumber " .. stageNumber .. " is not a valid number"
             end
 
-            local isComplete = GlobalStageManager.isStageComplete(stageNumber)
+            local isComplete = GlobalStageManager.isStageComplete(stageNumber, stageLaneIdentifier)
             if isComplete == nil then
                 return nil, "no stage found with number " .. stageNumber
             end