BUG: to_sql with datetime.time values with sqlite
I'm proposing a solution to #8341

As @jorisvandenbossche suggested, I use a sqlite3 adapter to transform `datetime.time` objects into string (`hh:mm:ss.ffffff`, as this what sqlalchemy... I think?)

I added a test in the class `_TestSQLApi`, so that the solution is tested with both sqlalchemy and the sqlite3 fallback. Thus, the result should be consistent.
