Chore: Scope URLs with account_id (#601)

* Chore: Enable Users to create multiple accounts

Addresses: #402
- migrations to split roles and other attributes from users table
- make changes in code to accommodate this change

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

app/controllers/api/v1/accounts/conversations/labels_controller.rb

@@ -0,0 +1,13 @@
+class Api::V1::Accounts::Conversations::LabelsController < Api::BaseController
+  before_action :set_conversation, only: [:create, :index]
+
+  def create
+    @conversation.update_labels(params[:labels])
+    @labels = @conversation.label_list
+  end
+
+  # all labels of the current conversation
+  def index
+    @labels = @conversation.label_list
+  end
+end