Enhance certificates/archives directories structure

[abdeldjalil-fellah]

Enhance certificates/archives directories structure and add an option to set custom certificate name or use the default first domain:

Suggested directories tree

• certificates

  • custom1
    • cert.crt
    • cert.issuer.crt
    • cert.json
    • cert.key
  • exmaple.com
    • cert.crt
    • cert.issuer.crt
    • cert.json
    • cert.key

• archives

  • custom1
    • 1
      • cert.crt
      • cert.issuer.crt
      • cert.json
      • cert.key
    • 2
      • cert.crt
      • cert.issuer.crt
      • cert.json
      • cert.key