Refactoring Sidebar Project Panel

In this commit we start the refactor of the project sidebar.

Instead of the current approach with all the logic in views and helpers,
we're moving to a model based structure where each menu model contains
its logic, visibility access levels, and all the necessary info.

Nevertheless, the migration is tricky because we cannot just replace
the whole sidebar (that would be a 130 files MR). In order to
make it incremental we still render the old views. Then, when we
add a new menu to the new structure we'll remove that menu
from the menu, until we migrate all menus and we can remove the view
entirely.

app/helpers/sidebars_helper.rb

@@ -14,6 +14,10 @@ module SidebarsHelper
     end
   end
 
+  def project_sidebar_context(project, user)
+    Sidebars::Context.new(**project_sidebar_context_data(project, user))
+  end
+
   private
 
   def sidebar_project_tracking_attrs
@@ -27,4 +31,12 @@ module SidebarsHelper
   def sidebar_user_profile_tracking_attrs
     tracking_attrs('user_side_navigation', 'render', 'user_side_navigation')
   end
+
+  def project_sidebar_context_data(project, user)
+    {
+      current_user: user,
+      container: project,
+      project: project
+    }
+  end
 end

app/models/sidebars/panel.rb

@@ -51,5 +51,25 @@ module Sidebars
     def renderable_menus
       @renderable_menus ||= @menus.select(&:render?)
     end
+
+    def container
+      context.container
+    end
+
+    # Auxiliar method that helps with the migration from
+    # regular views to the new logic
+    def render_raw_scope_menu_partial
+      # No-op
+    end
+
+    # Auxiliar method that helps with the migration from
+    # regular views to the new logic.
+    #
+    # Any menu inside this partial will be added after
+    # all the menus added in the `configure_menus`
+    # method.
+    def render_raw_menus_partial
+      # No-op
+    end
   end
 end

app/models/sidebars/projects/panel.rb

+# frozen_string_literal: true
+
+module Sidebars
+  module Projects
+    class Panel < ::Sidebars::Panel
+      override :render_raw_menus_partial
+      def render_raw_scope_menu_partial
+        'layouts/nav/sidebar/project_scope_menu'
+      end
+
+      override :render_raw_menus_partial
+      def render_raw_menus_partial
+        'layouts/nav/sidebar/project_menus'
+      end
+
+      override :aria_label
+      def aria_label
+        _('Project navigation')
+      end
+    end
+  end
+end

app/views/layouts/nav/sidebar/_project_scope_menu.html.haml

+.context-header
+  = link_to project_path(@project), title: @project.name do
+    .avatar-container.rect-avatar.s40.project-avatar
+      = project_icon(@project, alt: @project.name, class: 'avatar s40 avatar-tile', width: 40, height: 40)
+    .sidebar-context-title
+      = @project.name

app/views/shared/nav/_sidebar.html.haml

+%aside.nav-sidebar{ class: ('sidebar-collapsed-desktop' if collapsed_sidebar?), **sidebar_tracking_attributes_by_object(sidebar.container), 'aria-label': sidebar.aria_label }
+  .nav-sidebar-inner-scroll
+    - if sidebar.render_raw_scope_menu_partial
+      = render sidebar.render_raw_scope_menu_partial
+
+    %ul.sidebar-top-level-items.qa-project-sidebar
+      - if sidebar.render_raw_menus_partial
+        = render sidebar.render_raw_menus_partial
+
+    = render 'shared/sidebar_toggle_button'

qa/qa/page/project/menu.rb

@@ -13,7 +13,7 @@ module QA
         include SubMenus::Settings
         include SubMenus::Packages
 
-        view 'app/views/layouts/nav/sidebar/_project.html.haml' do
+        view 'app/views/layouts/nav/sidebar/_project_menus.html.haml' do
           element :activity_link
           element :merge_requests_link
           element :snippets_link

qa/qa/page/project/sub_menus/ci_cd.rb

@@ -13,7 +13,7 @@ module QA
             base.class_eval do
               include QA::Page::Project::SubMenus::Common
 
-              view 'app/views/layouts/nav/sidebar/_project.html.haml' do
+              view 'app/views/layouts/nav/sidebar/_project_menus.html.haml' do
                 element :link_pipelines
               end
             end

qa/qa/page/project/sub_menus/issues.rb

@@ -13,7 +13,7 @@ module QA
             base.class_eval do
               include QA::Page::Project::SubMenus::Common
 
-              view 'app/views/layouts/nav/sidebar/_project.html.haml' do
+              view 'app/views/layouts/nav/sidebar/_project_menus.html.haml' do
                 element :issue_boards_link
                 element :issues_item
                 element :labels_link

qa/qa/page/project/sub_menus/operations.rb

@@ -13,7 +13,7 @@ module QA
             base.class_eval do
               include QA::Page::Project::SubMenus::Common
 
-              view 'app/views/layouts/nav/sidebar/_project.html.haml' do
+              view 'app/views/layouts/nav/sidebar/_project_menus.html.haml' do
                 element :operations_link
                 element :operations_environments_link
                 element :operations_metrics_link

qa/qa/page/project/sub_menus/project.rb

@@ -13,7 +13,7 @@ module QA
             base.class_eval do
               include QA::Page::Project::SubMenus::Common
 
-              view 'app/views/layouts/nav/sidebar/_project.html.haml' do
+              view 'app/views/layouts/nav/sidebar/_project_menus.html.haml' do
                 element :project_link
               end
             end

qa/qa/page/project/sub_menus/repository.rb

@@ -13,7 +13,7 @@ module QA
             base.class_eval do
               include QA::Page::Project::SubMenus::Common
 
-              view 'app/views/layouts/nav/sidebar/_project.html.haml' do
+              view 'app/views/layouts/nav/sidebar/_project_menus.html.haml' do
                 element :repository_link
                 element :branches_link
                 element :tags_link

qa/qa/page/project/sub_menus/settings.rb

@@ -13,7 +13,7 @@ module QA
             base.class_eval do
               include QA::Page::Project::SubMenus::Common
 
-              view 'app/views/layouts/nav/sidebar/_project.html.haml' do
+              view 'app/views/layouts/nav/sidebar/_project_menus.html.haml' do
                 element :settings_item
                 element :general_settings_link
                 element :integrations_settings_link