Add transpiler option that toggles whether or not class properties WITHOUT default values are set to Invalid

⚠️ Note:
This is something I'm working on a PR for 🙂

Context

Currently, if you implement a class with a property that does not have a default value, Bsc is setting the value = invalid

Example

Class A
    fieldA as String

    Function new ()
    End Function
End Class

Transpiles to

function __A_builder()
    instance = {}
    instance.new = Function()
        m.fieldA = invalid
    End Function
    return instance
end function

function A()
    instance = __A_builder()
    instance.new()
    return instance
end function

Reason

Discussed with Bronley. Will add details here later!

The issue names no files or tests; start by locating the transpiler logic that assigns invalid to class properties without default values. Define the option's enabled and disabled behavior from the example, then verify the generated output shows the assignment only when configured to do so.