xapi: create page view and asset user access

test plan:
  * play Minecraft
  * look at your user's most recent page view and asset access
  * verify that entries were added for the LTI tool

Change-Id: I422a188ed80cbedbaa8b4ecafcb3262c6f2d1e14
Reviewed-on: https://gerrit.instructure.com/42783
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Brad Humphrey <brad@instructure.com>
Reviewed-by: Bracken Mosbacker <bracken@instructure.com>
Product-Review: Bracken Mosbacker <bracken@instructure.com>
QA-Review: Braden Anderson <braden@instructure.com>