feat: Calculate mediaTimeSpent based on current time (#42)

Co-authored-by: Mohammed Mustafa <[email protected]>

Author: mmustafa-tse

mParticleCore.brs

@@ -2294,6 +2294,9 @@ function mParticleSGBridge(task as object) as object
             logQoS: function(mediaSession as object, startupTime as integer, droppedFrames as integer, bitRate as integer, fps as integer, options = {} as object) as void
                 m.invokeFunction("media/logQoS", [mediaSession, startupTime, droppedFrames, bitRate, fps, options])
             end function,
+            getMediaTimeSpent: function(mediaSession as object) as longinteger
+                return m.unixTimeMillis() - mediaSession.mediaSessionStartTime
+            end function,
             unixTimeMillis: function() as longinteger
                 date = CreateObject("roDateTime")
                 currentTime = CreateObject("roLongInteger")