Changes

• Add new demo showcasing how to implement Google Native/OneTap sign in on android & use an in-app web browser for oauth
• Add experimental support for SSO Logins (untested, feedback appreciated)
  SSO Logins

  client.gotrue.loginWith(SSO.withProvider("providerId"))
  client.gotrue.loginWith(SSO.withDomain("domain"))

  Works same as oauth, deeplinking used for mobile and http callback server on desktop
• Add GoTrue#retrieveSSOUrl(type)
• Add experimental support for the PKCE login flow. Changing to it is as simple as:

  //change the login flow to PKCE in the GoTrue configuration
  val client = createSupabaseClient(url, key) {
      install(GoTrue) {
          flowType = FlowType.PKCE 
      }
  }

  Note: You can customize the way the code verifiers get saved in the GoTrue config
• Add GoTrue#exchangeCodeForSession(code)
• Expose GoTrue#parseFragmentAndImportSession(fragment), so you don't have to parse all this by yourself when using a custom OAuth implementation
• Add GoTrue#oAuthUrl(provider), to easily get the oauth url when using a custom implementation
• Add scopes & queryParams properties to OAuth configuration:

  client.gotrue.loginWith(Google) {
     scopes.add("email")
     queryParams["key"] = "value"
  } 

• Add missing properties to UserSession: providerToken & providerRefreshToken

(tag is pointing to the wrong branch, the right one would be development)