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>

spec/controllers/api/v1/accounts_controller_spec.rb

@@ -5,7 +5,8 @@ RSpec.describe 'Accounts API', type: :request do
     context 'when posting to accounts with correct parameters' do
       let(:account_builder) { double }
       let(:email) { Faker::Internet.email }
-      let(:user) { create(:user, email: email) }
+      let(:account) { create(:account) }
+      let(:user) { create(:user, email: email, account: account) }
 
       before do
         allow(AccountBuilder).to receive(:new).and_return(account_builder)