Detect expo version and warn the user

[karol-bisztyga]

Maybe we should handle a situation when some version of reanimated is being run with a specific version of expo. It often happened that people posted issues because they were not using the supported version of reanimated for the version of expo they had(Take o look here)(for instance expo sdk40 supported reanimated 2 rc0 but people used reanimated 2 rc2(there were native changes between rc0 and rc2) and that obviously didn't work).

We could detect somehow a version of expo that's being used and, if its version doesn't match the reanimated's version, inform the user that they should use another reanimated release or another expo sdk. Maybe expo sets some flag that can be used.