feat: Add team assignment & filter APIs (#1712)

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

@@ -1,9 +1,20 @@
 class Api::V1::Accounts::Conversations::AssignmentsController < Api::V1::Accounts::Conversations::BaseController
-  # assign agent to a conversation
+  # assigns agent/team to a conversation
   def create
+    set_assignee
+    render json: @assignee
+  end
+
+  private
+
+  def set_assignee
     # if params[:assignee_id] is not a valid id, it will set to nil, hence unassigning the conversation
-    assignee = Current.account.users.find_by(id: params[:assignee_id])
-    @conversation.update_assignee(assignee)
-    render json: assignee
+    if params.key?(:assignee_id)
+      @assignee = Current.account.users.find_by(id: params[:assignee_id])
+      @conversation.update_assignee(@assignee)
+    elsif params.key?(:team_id)
+      @assignee = Current.account.teams.find_by(id: params[:team_id])
+      @conversation.update!(team: @assignee)
+    end
   end
 end