occ command to return all info about app

[vitormattos]

Background

The setup of LibreSign have now a checklist with many steps.

Feature

Implement the command occ libresign:info to run the follow checklist and return with results.

Checklist:

• Nextcloud Server version
• LibreSign Version
• Java version
• JSignPdf Version
• Java binary path
• JSignPdf binary path
• LibreSign cli path
• LibreSign cli version
• CFSSL settings
  • Comon name
  • Organization unit
  • Organization
  • Country name
  • Config path
  • CFSSL URI
  • Binary path
• Test to sign PDF document: success

Or, to make more simple, list all LibreSign config values returning the values and the result of tests outside of config settings list.