Restructure omni services and add Chatwoot research snapshot

research/chatwoot/enterprise/app/controllers/api/v1/accounts/contacts/calls_controller.rb

@@ -0,0 +1,38 @@
+class Api::V1::Accounts::Contacts::CallsController < Api::V1::Accounts::BaseController
+  before_action :contact
+  before_action :voice_inbox
+
+  def create
+    authorize contact, :show?
+    authorize voice_inbox, :show?
+
+    result = Voice::OutboundCallBuilder.perform!(
+      account: Current.account,
+      inbox: voice_inbox,
+      user: Current.user,
+      contact: contact
+    )
+
+    conversation = result[:conversation]
+
+    render json: {
+      conversation_id: conversation.display_id,
+      inbox_id: voice_inbox.id,
+      call_sid: result[:call_sid],
+      conference_sid: conversation.additional_attributes['conference_sid']
+    }
+  end
+
+  private
+
+  def contact
+    @contact ||= Current.account.contacts.find(params[:id])
+  end
+
+  def voice_inbox
+    @voice_inbox ||= Current.user.assigned_inboxes.where(
+      account_id: Current.account.id,
+      channel_type: 'Channel::Voice'
+    ).find(params.require(:inbox_id))
+  end
+end