Add search box to settings project page

- Creates haml partial with search box layout
- Hides the search box behind a feature flag
- Adds feature flag definition

app/controllers/projects_controller.rb

@@ -34,6 +34,7 @@ class ProjectsController < Projects::ApplicationController
   before_action only: [:edit] do
     push_frontend_feature_flag(:approval_suggestions, @project, default_enabled: true)
     push_frontend_feature_flag(:allow_editing_commit_messages, @project)
+    push_frontend_feature_flag(:search_settings_in_page, @project, default_enabled: false)
   end
 
   layout :determine_layout

app/views/projects/edit.html.haml

@@ -3,6 +3,9 @@
 - @content_class = "limit-container-width" unless fluid_layout
 - expanded = expanded_by_default?
 
+- if Feature.enabled?(:search_settings_in_page, @project, default_enabled: false)
+  = render "shared/search_settings"
+
 %section.settings.general-settings.no-animate.expanded#js-general-settings
   .settings-header
     %h4.settings-title.js-settings-toggle.js-settings-toggle-trigger-only= _('Naming, topics, avatar')

app/views/shared/_search_settings.html.haml

+.search-box-by-type.gl-mt-5
+  = sprite_icon('search', css_class: 'gl-search-box-by-type-search-icon gl-icon s16')
+  %input#search-settings-input.gl-form-input.gl-w-full.gl-search-box-by-type-input{ type: 'search', placeholder: _('Search settings') }

config/feature_flags/development/search_settings_in_page.yml

+---
+name: search_settings_in_page
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/50207
+rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/294025
+milestone: '13.7'
+type: development
+group: group::editor
+default_enabled: false

locale/gitlab.pot

@@ -24319,6 +24319,9 @@ msgstr ""
 msgid "Search requirements"
 msgstr ""
 
+msgid "Search settings"
+msgstr ""
+
 msgid "Search users"
 msgstr ""