Adding required Roku Performance Beacons for EPG

https://developer.roku.com/en-gb/docs/references/scenegraph/list-and-grid-nodes/timegrid.md#measuring-epg-launch-times

components/ItemGrid2/ItemGrid2.brs

@@ -268,6 +268,7 @@ end sub
 sub optionsClosed()
 
   if (m.options.view = "tvGuide") then
+    m.top.signalBeacon("EPGLaunchInitiate") ' Required Roku Performance monitoring
     if m.tvGuide = invalid then 
        m.tvGuide = createObject("roSGNode", "Schedule")
     endif

components/liveTv/schedule.brs

@@ -56,6 +56,7 @@ sub onChannelsLoaded()
     m.LoadProgramDetailsTask.observeField("programDetails", "onProgramDetailsLoaded")
 
     m.scheduleGrid.setFocus(true)
+    m.top.signalBeacon("EPGLaunchComplete") ' Required Roku Performance monitoring
 end sub
 
 ' When LoadScheduleTask completes (initial or more data) and we have a schedule to display