Feat(medusa, user, core-flows): User creation with invites (#6413)

**What**
- add accept invite endpoint 

**Invite accept flow**
- authenticate using the auth endpoint to create and auth-user
- invoke accept endpoint with token and info to create user

packages/utils/src/auth/abstract-auth-provider.ts

@@ -46,7 +46,7 @@ export abstract class AbstractAuthModuleProvider {
 
     const cloned = new (this.constructor as any)(this.container_)
     cloned.scope_ = scope
-    cloned.scopeConfg_ = this.scopes_[scope]
+    cloned.scopeConfig_ = this.scopes_[scope]
 
     return cloned
   }