Add REST API for Web Push Notifications subscriptions (#7445)

- POST /api/v1/push/subscription
- PUT /api/v1/push/subscription
- DELETE /api/v1/push/subscription
- New OAuth scope: "push" (required for the above methods)

config/initializers/doorkeeper.rb

@@ -55,7 +55,7 @@ Doorkeeper.configure do
   # For more information go to
   # https://github.com/doorkeeper-gem/doorkeeper/wiki/Using-Scopes
   default_scopes  :read
-  optional_scopes :write, :follow
+  optional_scopes :write, :follow, :push
 
   # Change the way client credentials are retrieved from the request object.
   # By default it retrieves first from the `HTTP_AUTHORIZATION` header, then

config/locales/doorkeeper.en.yml

@@ -115,5 +115,6 @@ en:
         title: OAuth authorization required
     scopes:
       follow: follow, block, unblock and unfollow accounts
+      push: receive push notifications for your account
       read: read your account's data
       write: post on your behalf

config/routes.rb

@@ -306,6 +306,10 @@ Rails.application.routes.draw do
       resources :lists, only: [:index, :create, :show, :update, :destroy] do
         resource :accounts, only: [:show, :create, :destroy], controller: 'lists/accounts'
       end
+
+      namespace :push do
+        resource :subscription, only: [:create, :update, :destroy]
+      end
     end
 
     namespace :web do