feat: Team APIs (#1654)

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

spec/models/team_member_spec.rb

@@ -0,0 +1,8 @@
+require 'rails_helper'
+
+RSpec.describe TeamMember, type: :model do
+  describe 'associations' do
+    it { is_expected.to belong_to(:team) }
+    it { is_expected.to belong_to(:user) }
+  end
+end