title: How to implement OAuth to FastAPI with client ID & Secret
body: <p>I have followed the docs about Oauth2 but it does not describe the proccess to add client id and secret</p>
  <p><a href="https://fastapi.tiangolo.com/advanced/security/oauth2-scopes/" rel="noreferrer">https://fastapi.tiangolo.com/advanced/security/oauth2-scopes/</a></p>
  <p>and what this does</p>
  <pre><code>class UserInDB(User):
      hashed_password: str
  </code></pre>
  <p>from the original example</p>