Redis support

[scndel]

Tested, with limited Redis support: default port 6379 and no authentication (extension described in README tasks).

[scndel]

I could also validate GPG encryption but I had issue on one instance with this Redis error.
The involved instance is also the one having the biggest Redis data (~400 M), possibly the root cause.

Backuping redis: redis-master
2023-10-31T07:38:21.325232623Z sending REPLCONF capa eof
2023-10-31T07:38:21.325250307Z sending REPLCONF rdb-only 1
Error reading bulk length while SYNCing