trs_stats_detect_seen_type / trs_stats_detect_mon_raw tables never cleaned up, growing to infinity

[JabLuszko]

Probably add it to

MAD/mapadroid/db/DbStatsSubmit.py

Line 53 in ec9cc6b

def cleanup_statistics(self):

However there is no timestamp in trs_stats_detect_seen_type and I think joining pokemon/trs_spawn table on cleanup is not the best idea - so add missing timestamp?