title: How should a BigCommerce app authenticate with a 3rd party API?
body: <p>We are building a BigCommerce app to interface with our SaaS product.</p>
  <p>After installing the app, the user needs to authenticate with our service.  Unless BigCommerce offers some SSO solution, this means they'll enter an email/password to login.  This will return an access token for our API.</p>
  <p>Does BigCommerce have some kind of storage to hold this token?  I don't want users to have to re-authenticate any time they access our app admin view from a different computer or as a different user.</p>
  <p>Is there an SSO for apps? I'm only seeing customer SSO.  I also don't see anything about settings/token storage.</p>