FEATURE: Add API Scope for latest posts (#21913)

Adds api scopes for

- `/posts.json`
- `/posts.rss`
- `/private-posts.json`
- `/private-posts.rss`

app/models/api_key_scope.rb

@@ -61,6 +61,9 @@ class ApiKeyScope < ActiveRecord::Base
           delete: {
             actions: %w[posts#destroy],
           },
+          list: {
+            actions: %w[posts#latest],
+          },
         },
         tags: {
           list: {

config/locales/client.en.yml

@@ -4778,6 +4778,7 @@ en:
             posts:
               edit: Edit any post or a specific one.
               delete: Delete a post.
+              list: List latest posts and private posts. RSS is also supported.
             tags:
               list: List tags.
             categories:

spec/requests/admin/api_controller_spec.rb

@@ -436,6 +436,8 @@ RSpec.describe Admin::ApiController do
         )
 
         expect(scopes["topics"].any? { |h| h["urls"].include?("/latest.rss (GET)") }).to be_truthy
+        expect(scopes["posts"].any? { |h| h["urls"].include?("/posts (GET)") }).to be_truthy
+        expect(scopes["posts"].any? { |h| h["urls"].include?("/private-posts (GET)") }).to be_truthy
       end
     end