Auto detect state | deprecate helper

[ECorreia45]

By using signals algorithm for detecting effects
We can automatically detect states even inside functions. This means

• removing the need for states to be function arguments for the function to be reactive
• state getter to be a internally subscribable function
• any function that uses state internally used inside the template to be reactive by default which means no need to wrap a function with helper.

onStateUpdate(() => {
  // handle
}) // <- can even consider adding list of states to react to

when(() => someState() > 2, ...) // would be reactive

What happens to helper/Helper?

If after this there is no usage, it can be deprecated.

Bonus

• Introduce the onStateUpdate and make the second argument be a "reducer" type of function that the returned value is kept. This means, deprecating state unsubscriber.
• Memoize state values and do shallow comparisons before broadcasting
• Make state a standalone part