feat: add --permissionless flag for authorization commands

[PivasDesant]

Adds --permissionless flag to authorization commands as an alternative to --authorizer 11111111111111111111111111111111.

The flag automatically uses system_program::ID internally and conflicts with --authorizer to prevent misuse.

Affected commands:

• join-authorization-create
• join-authorization-delete
• join-authorization-read
• can-join

Closes #471

[arilotter]

Thank you for the PR!!! this is sweet, almost exactly what i need. now that i see it down in a PR, I wonder if we shouldn't generally replace the authorization stuff in the CLIs with an enum, like

enum Authorization {
  Address(..),
  Permissionless
 }

and then can implement this in such a way that if you pass --authorization permissionless that maps to the 11111111 addr.... @crypto-vincent what do you think?

[crypto-vincent]

Thank you for the PR!!! this is sweet, almost exactly what i need. now that i see it down in a PR, I wonder if we shouldn't generally replace the authorization stuff in the CLIs with an enum, like

enum Authorization {
  Address(..),
  Permissionless
 }

and then can implement this in such a way that if you pass --authorization permissionless that maps to the 11111111 addr.... @crypto-vincent what do you think?

Thanks everyone for looking into this! I'm also wondering if there's a way to implement this without using the conflict_with type of logic on the CLI. Maybe --authorization NONE or something, but i'm not sure what would be the idiomatic thing to do here.