Gatherer: make possible to use --verbose=debug from ENV
Gatherer: make possible to use --verbose=debug from ENV

2 ways now possible: exlicit level name or if no matches then string
lenght will be used for level: 0:WARN, 1:INFO, 2+:DEBUG.
Aa per issue #215

cybertec-postgresql/pgwatch2,cybertec-postgresql/pgwatch2,cybertec-postgresql/pgwatch2,cybertec-postgresql/pgwatch2