feat: add authorization controller for google inbox

app/controllers/api/v1/accounts/google/authorizations_controller.rb

@@ -0,0 +1,29 @@
+class Api::V1::Accounts::Google::AuthorizationsController < Api::V1::Accounts::BaseController
+  before_action :check_authorization
+
+  def create
+    email = params[:authorization][:email]
+    redirect_url = google_client.auth_code.authorize_url(
+      {
+        redirect_uri: "#{base_url}/google/callback",
+        scope: 'email profile https://mail.google.com/',
+        response_type: 'code',
+        client_id: GlobalConfigService.load('GOOGLE_OAUTH_CLIENT_ID', nil)
+      }
+    )
+
+    if redirect_url
+      email = email.downcase
+      ::Redis::Alfred.setex(email, Current.account.id, 5.minutes)
+      render json: { success: true, url: redirect_url }
+    else
+      render json: { success: false }, status: :unprocessable_entity
+    end
+  end
+
+  private
+
+  def check_authorization
+    raise Pundit::NotAuthorizedError unless Current.account_user.administrator?
+  end
+end