add: applied join project

app/views/applied_projects/_detail.json.jbuilder

@@ -0,0 +1,18 @@
+project = object.project
+json.project do 
+  json.id project.id
+  json.identifier project.identifier
+  json.name project.name
+  json.description project.description
+  json.is_public project.is_public
+  json.owner do 
+    json.partial! "/users/user_simple", locals: {user: project.owner}
+  end
+end
+json.user do 
+  json.partial! "/users/user_simple", locals: {user: object.user}
+end
+json.id object.id
+json.status object.status
+json.created_at format_time(object.created_at)
+json.time_ago time_from_now(object.created_at)

app/views/applied_projects/create.json.jbuilder

@@ -0,0 +1 @@
+json.partial! "detail", locals: {object: @applied_project}