title: Am I able to create an SSO that uses firebase as the idP for my Shopify store?
body: <p>How can I use firebase as an idP when authenticating customers logging into a Shopify store.</p>
  <p>I want users to sign up on my web app for an account.</p>
  <p>Then when they make it to my Shopify store for them to have an option to sign into the store using my web app credentials.
  Similar to how you can add a 'sign in with Google' option.</p>
  <p>How do I create that SSO using Shopify as the service provider and firebase as the idP so that my users on my web app can also sign into my Shopify app?</p>