Add Team members list method

[evanvolgas]

Summary

The SDK is missing the ability to list members of a team.

Core API endpoint

• GET /teams/{id}/members - List all users belonging to a team

Method to add

class TeamsResource:
    def list_members(
        self, 
        team_id: UUID,
        limit: int = 20,
        offset: int = 0
    ) -> PaginatedResponse[User]:
        """List all members of a team."""

Use case

Team management - seeing who belongs to a team.

[vishal-kalbi]

Please assign this issue to me

[evanvolgas]

Done!

[vishal-kalbi]

@evanvolgas Thanks, I will start work on this