chore: implement cli list organization members (#13555)

example cli command: 
`coder organization members`

codersdk/organizations.go

@@ -51,11 +51,11 @@ type Organization struct {
 }
 
 type OrganizationMember struct {
-	UserID         uuid.UUID  `db:"user_id" json:"user_id" format:"uuid"`
-	OrganizationID uuid.UUID  `db:"organization_id" json:"organization_id" format:"uuid"`
-	CreatedAt      time.Time  `db:"created_at" json:"created_at" format:"date-time"`
-	UpdatedAt      time.Time  `db:"updated_at" json:"updated_at" format:"date-time"`
-	Roles          []SlimRole `db:"roles" json:"roles"`
+	UserID         uuid.UUID  `table:"user id" json:"user_id" format:"uuid"`
+	OrganizationID uuid.UUID  `table:"organization id" json:"organization_id" format:"uuid"`
+	CreatedAt      time.Time  `table:"created at" json:"created_at" format:"date-time"`
+	UpdatedAt      time.Time  `table:"updated at" json:"updated_at" format:"date-time"`
+	Roles          []SlimRole `table:"organization_roles" json:"roles"`
 }
 
 type OrganizationMemberWithName struct {

codersdk/roles.go

@@ -19,6 +19,22 @@ type SlimRole struct {
 	OrganizationID string `json:"organization_id,omitempty"`
 }
 
+func (s SlimRole) String() string {
+	if s.DisplayName != "" {
+		return s.DisplayName
+	}
+	return s.Name
+}
+
+// UniqueName concatenates the organization ID to create a globally unique
+// string name for the role.
+func (s SlimRole) UniqueName() string {
+	if s.OrganizationID != "" {
+		return s.Name + ":" + s.OrganizationID
+	}
+	return s.Name
+}
+
 type AssignableRoles struct {
 	Role       `table:"r,recursive_inline"`
 	Assignable bool `json:"assignable" table:"assignable"`