Make `validate` function synchronous if possible

[nicolasperez19]

Making the parsing synchronous would make it easier to integrate with other tools like t3Env

[harshtalks]

any updates on this?

[itsyoboieltr]

I have this issue too. React Native does not support top-level await. This means I cannot use validate and assert in my modules, as they are async. I would recommend that we also provide synchronous counterparts for these functions.