add: user pinned projects

app/views/projects/_project_detail.json.jbuilder

@@ -5,6 +5,9 @@ json.name project.name
 json.description Nokogiri::HTML(project.description).text
 json.visits project.visits
 json.praises_count project.praises_count.to_i
+json.watchers_count project.watchers_count.to_i 
+json.issues_count project.issues_count.to_i  
+json.pull_requests_count project.pull_requests_count.to_i  
 json.forked_count project.forked_count.to_i
 json.is_public project.is_public
 json.mirror_url project.repository&.mirror_url

app/views/repositories/edit.json.jbuilder

@@ -12,4 +12,5 @@ json.permission render_permission(current_user, @project)
 json.is_transfering @project.is_transfering
 json.transfer do 
   json.partial! "/users/user_simple", locals: {user: @project&.applied_transfer_project&.owner}
-end
+end
+json.is_pinned @project.has_pinned_users.include?(current_user)

app/views/users/is_pinned_projects/index.json.jbuilder

@@ -0,0 +1,4 @@
+json.total_count @is_pinned_projects.total_count 
+json.projects @is_pinned_projects.each do |project|
+  json.partial! "projects/project_detail", project: project
+end