Extent integration tests to create a new wallet account

[cammellos]

We should increase the coverage of the newly created clojure integration tests.

One of the most common use cases is to create a new wallet account.

The UI steps are:

1. Create a new account (already covered by steps) & login (we can start from these steps https://github.com/status-im/status-react/blob/9f9b896eb7fcfac60d55b33a3744480b13d2ba8d/src/status_im/integration_test.cljs#L46 )
2. Go to wallet
3. Slide Main account and click on Add an account
4. Click on generate an account
5. Input password and account name
6. Click on Add account
7. Verify account is created