Add support to VerifyOTP

[filhodanuvem]

Hello team, I'm doing a full cycle of signup / sign using email/password and noticed that I received a confirmation link in my email inbox but there's not way to verify that based on the hash provided.
Am I missing anything or it's really missing the verifyOtp function in the library?

Documentation: https://supabase.com/docs/guides/auth/passwords?queryGroups=flow&flow=pkce#signing-up-with-an-email-and-password on Step 2: Create token exchange endpoint.