feat: Add Contacts page (#1335)

Co-authored-by: Sojan <sojan@pepalo.com>
Co-authored-by: Pranav Raj Sreepuram <pranavrajs@gmail.com>

app/views/api/v1/accounts/contacts/active.json.jbuilder

@@ -1,3 +1,8 @@
+json.meta do
+  json.count @contacts_count
+  json.current_page @current_page
+end
+
 json.payload do
   json.array! @contacts do |contact|
     json.partial! 'api/v1/models/contact.json.jbuilder', resource: contact, with_contact_inboxes: true

app/views/api/v1/accounts/contacts/index.json.jbuilder

@@ -1,3 +1,8 @@
+json.meta do
+  json.count @contacts_count
+  json.current_page @current_page
+end
+
 json.payload do
   json.array! @contacts do |contact|
     json.partial! 'api/v1/models/contact.json.jbuilder', resource: contact, with_contact_inboxes: true

app/views/api/v1/accounts/contacts/search.json.jbuilder

@@ -1,3 +1,8 @@
+json.meta do
+  json.count @contacts_count
+  json.current_page @current_page
+end
+
 json.payload do
   json.array! @contacts do |contact|
     json.partial! 'api/v1/models/contact.json.jbuilder', resource: contact, with_contact_inboxes: true

app/views/api/v1/models/_contact.json.jbuilder

@@ -6,6 +6,8 @@ json.name resource.name
 json.phone_number resource.phone_number
 json.thumbnail resource.avatar_url
 json.custom_attributes resource.custom_attributes
+json.conversations_count resource.conversations_count if resource[:conversations_count].present?
+json.last_seen_at resource.last_seen_at if resource[:last_seen_at].present?
 
 # we only want to output contact inbox when its /contacts endpoints
 if defined?(with_contact_inboxes) && with_contact_inboxes.present?