[client] Add state handling cmdline options

[lixmal]

Describe your changes

$ ./netbird state --help
Provides commands for managing and inspecting the Netbird daemon state.

Usage:
  netbird state [command]

Available Commands:
  clean       Clean stored states
  delete      Delete stored states
  list        List all stored states

Issue ticket number and link

Checklist

• Is it a bug fix
• Is a typo/documentation fix
• Is a feature enhancement
• It is a refactor
• Created tests that fail without the change (if possible)
• Extended the README / documentation, if necessary

The base branch was changed.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud