feat: Add APIs to manage custom roles in Chatwoot (#9995)

Co-authored-by: Pranav <pranavrajs@gmail.com>

enterprise/app/controllers/api/v1/accounts/custom_roles_controller.rb

@@ -0,0 +1,31 @@
+class Api::V1::Accounts::CustomRolesController < Api::V1::Accounts::EnterpriseAccountsController
+  before_action :fetch_custom_role, only: [:show, :update, :destroy]
+  before_action :check_authorization
+
+  def index
+    @custom_roles = Current.account.custom_roles
+  end
+
+  def create
+    @custom_role = Current.account.custom_roles.create!(permitted_params)
+  end
+
+  def show; end
+
+  def update
+    @custom_role.update!(permitted_params)
+  end
+
+  def destroy
+    @custom_role.destroy!
+    head :ok
+  end
+
+  def permitted_params
+    params.require(:custom_role).permit(:name, :description, permissions: [])
+  end
+
+  def fetch_custom_role
+    @custom_role = Current.account.custom_roles.find_by(id: params[:id])
+  end
+end

enterprise/app/controllers/enterprise/api/v1/accounts/agents_controller.rb

@@ -0,0 +1,9 @@
+module Enterprise::Api::V1::Accounts::AgentsController
+  def account_user_attributes
+    super + [:custom_role_id]
+  end
+
+  def allowed_agent_params
+    super + [:custom_role_id]
+  end
+end