Revamp the authentication setup (#7419)

* feat: Add email pass authentication provider package

* feat: Revamp auth module and remove concept of scope

* feat: Revamp the auth module to be more standardized in how providers are loaded

* feat: Switch from scope to actor type for authentication

* feat: Add support for per-actor auth methods

* feat: Add emailpass auth provider by default

* fix: Add back app_metadata in auth module

packages/modules/providers/auth-emailpass/src/index.ts

@@ -0,0 +1,10 @@
+import { ModuleProviderExports } from "@medusajs/types"
+import { EmailPassAuthService } from "./services/emailpass"
+
+const services = [EmailPassAuthService]
+
+const providerExport: ModuleProviderExports = {
+  services,
+}
+
+export default providerExport