config-provider list: align output style with operatorList (emoji + bullet points)

[hsablonniere]

Context / Problem

The config-provider list command outputs a list grouped by organisation, similar to operator commands (otoroshi list, keycloak list, matomo list, metabase list), but doesn't follow the same formatting style.

clever otoroshi (via operatorList in src/lib/operator-commands.js):

🔎 Found 2 Otoroshi operators:

• orga_xxx (ACME FOO)
  • fs-test-operator-otoroshi (otoroshi_xxx)

• orga_yyy (ACME BAR)
  • test-addon-otoroshi (otoroshi_yyy)

clever config-provider list (src/commands/config-provider/config-provider.list.command.js):

Found 1 configuration provider:

orga_yyy (ACME BAR)
  test-addon-config (config_xxx)

Missing:

• 🔎 emoji prefix on the header line
• • bullet points on org lines and item lines

TODO

• Add 🔎 emoji prefix to the header line (line 32) and the empty case (add a line similar to operatorList)
• Add • before each org group header (line 36)
• Add • before each provider item (line 38)
• Consider extracting a generic helper for displaying grouped-by-org lists (the pattern is duplicated between operatorList in src/lib/operator-commands.js and config-provider list — a shared helper would ensure consistent formatting and reduce duplication for future similar commands)