Add feature categories to all API classes with A

What it says in the title

lib/api/access_requests.rb

@@ -8,6 +8,8 @@ module API
 
     helpers ::API::Helpers::MembersHelpers
 
+    feature_category :authentication_and_authorization
+
     %w[group project].each do |source_type|
       params do
         requires :id, type: String, desc: "The #{source_type} ID"

lib/api/admin/ci/variables.rb

@@ -8,6 +8,8 @@ module API
 
         before { authenticated_as_admin! }
 
+        feature_category :continuous_integration
+
         namespace 'admin' do
           namespace 'ci' do
             namespace 'variables' do

lib/api/admin/instance_clusters.rb

@@ -5,6 +5,8 @@ module API
     class InstanceClusters < ::API::Base
       include PaginationParams
 
+      feature_category :kubernetes_management
+
       before do
         authenticated_as_admin!
       end

lib/api/admin/sidekiq.rb

@@ -5,6 +5,8 @@ module API
     class Sidekiq < ::API::Base
       before { authenticated_as_admin! }
 
+      feature_category :not_owned
+
       namespace 'admin' do
         namespace 'sidekiq' do
           namespace 'queues' do

lib/api/appearance.rb

@@ -4,6 +4,8 @@ module API
   class Appearance < ::API::Base
     before { authenticated_as_admin! }
 
+    feature_category :navigation
+
     helpers do
       def current_appearance
         @current_appearance ||= (::Appearance.current || ::Appearance.new)

lib/api/applications.rb

@@ -5,6 +5,8 @@ module API
   class Applications < ::API::Base
     before { authenticated_as_admin! }
 
+    feature_category :authentication_and_authorization
+
     resource :applications do
       helpers do
         def validate_redirect_uri(value)

lib/api/avatar.rb

@@ -2,6 +2,8 @@
 
 module API
   class Avatar < ::API::Base
+    feature_category :users
+
     resource :avatar do
       desc 'Return avatar url for a user' do
         success Entities::Avatar

lib/api/award_emoji.rb

@@ -6,9 +6,9 @@ module API
 
     before { authenticate! }
     AWARDABLES = [
-      { type: 'issue', find_by: :iid },
-      { type: 'merge_request', find_by: :iid },
-      { type: 'snippet', find_by: :id }
+      { type: 'issue', find_by: :iid, feature_category: :issue_tracking },
+      { type: 'merge_request', find_by: :iid, feature_category: :code_review },
+      { type: 'snippet', find_by: :id, feature_category: :snippets }
     ].freeze
 
     params do
@@ -34,7 +34,7 @@ module API
           params do
             use :pagination
           end
-          get endpoint do
+          get endpoint, feature_category: awardable_params[:feature_category] do
             if can_read_awardable?
               awards = awardable.award_emoji
               present paginate(awards), with: Entities::AwardEmoji
@@ -50,7 +50,7 @@ module API
           params do
             requires :award_id, type: Integer, desc: 'The ID of the award'
           end
-          get "#{endpoint}/:award_id" do
+          get "#{endpoint}/:award_id", feature_category: awardable_params[:feature_category] do
             if can_read_awardable?
               present awardable.award_emoji.find(params[:award_id]), with: Entities::AwardEmoji
             else
@@ -65,7 +65,7 @@ module API
           params do
             requires :name, type: String, desc: 'The name of a award_emoji (without colons)'
           end
-          post endpoint do
+          post endpoint, feature_category: awardable_params[:feature_category] do
             not_found!('Award Emoji') unless can_read_awardable? && can_award_awardable?
 
             service = AwardEmojis::AddService.new(awardable, params[:name], current_user).execute
@@ -84,7 +84,7 @@ module API
           params do
             requires :award_id, type: Integer, desc: 'The ID of an award emoji'
           end
-          delete "#{endpoint}/:award_id" do
+          delete "#{endpoint}/:award_id", feature_category: awardable_params[:feature_category] do
             award = awardable.award_emoji.find(params[:award_id])
 
             unauthorized! unless award.user == current_user || current_user.admin?

spec/lib/api/every_api_endpoint_spec.rb

@@ -17,8 +17,14 @@ RSpec.describe 'Every API endpoint' do
     let_it_be(:routes_without_category) do
       api_endpoints.map do |(klass, path)|
         next if klass.try(:feature_category_for_action, path)
+
         # We'll add the rest in https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/463
-        next unless klass == ::API::Users || klass == ::API::Issues
+        completed_classes = [
+          ::API::Users, ::API::Issues, ::API::AccessRequests, ::API::Admin::Ci::Variables,
+          ::API::Admin::InstanceClusters, ::API::Admin::Sidekiq, ::API::Appearance,
+          ::API::Applications, ::API::Avatar, ::API::AwardEmoji
+        ]
+        next unless completed_classes.include?(klass)
 
         "#{klass}##{path}"
       end.compact.uniq