Admin CLI :: Add "db-info" command

[wajda]

A new command should check the connection to the DB and print the basic info like DB server version, DB schema version, its status (if it's ready or any upgrade is in progress).

For example:

Database Server   : ArangoDB 3.11.0
Database Name     : spline
Status            : READY
Schema Version    : 1.2.3
First Created     : Aug 24, 2023 at 12:56
Last Upgraded     : Sep 1, 2024 at 05:30 (from version 1.2.2)  |  never

Deployed Services :
 - /spline        : 1.4.2

or (when upgrade is being carried out)

Database Server   : ArangoDB 3.11.0
Database Name     : spline
Status            : UPGRADING
Schema Version    : 1.2.3 -> 1.3.0
Upgrade Started   : Sep 30, 2024 at 16:29
First Created     : Aug 24, 2023 at 12:56
Prev. Upgraded    : Sep 1, 2024 at 05:30 (from version 1.2.2)  |  never

Deployed Services :
 - /spline        : 1.4.2