inveniomanage: config manager initial release

• Adds command database version.

• Ports commands for printing database and system information.

• Adds commands database driver and detect-system-details for printing usefull debugging information about database and system.

• Ports config create secret-key from inveniocfg --create-secret-key

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>