query: print stats during tests generation
query: print stats during tests generation

The statistics about number of queries and tests and number
of queries without any tests are useful to get overview of
the status. It also lists the queries that lacks tests.

Signed-off-by: Jan Viktorin <3eab6ac54c005c4408f608556a6663b7f2abede7@fit.vutbr.cz>

BeeeOn/server,BeeeOn/server,BeeeOn/server,BeeeOn/server