Add setup wizard

Added a setup wizard that appears on first run, or when no config dir is
found.

jellyfin_accounts/email.py

@@ -177,3 +177,7 @@ class Smtp(Email):
             err = f'{self.address}: Failed to send via smtp: '
             err += type(e).__name__
             log.error(err)
+            try:
+                log.error(e.smtp_error)
+            except:
+                pass