Short-circuit Logical AND expressions

I have an Ink function of the form:

```
=== function can_do_something()
~ return some_var == 0 && some_expensive_to_run_external_function() == true
```

`some_expensive_to_run_external_function` gets called every time, even when `some_var == 0`

Ideally, for performance, Ink would follow other languages where typical behavior is:

> && guarantees left-to-right evaluation: the second operand is not evaluated if the first operand is false.