qwik-city: require validator when arguments are sent to server

[wmertens]

Problem

It's easy to forget that rpc calls like server$ can be done by anyone with any arguments.

Qwik should be secure by default.

---

Proposed Solution / Feature

What do you propose?

Whenever a server function requires an argument, require a validator

Code examples

// OK
const foo = server$(() => 'hello')
// Not OK
const bar = server$((name) => 'hello ${name}')
// OK
const bar = server$((name) => 'hello ${name}', zod$([z.string()]))

See #24 for validation of server$ arguments