Pass along type info

[dpi]

Pass along type info from a slot object.

Auto populate if coming from a #[Slots(bindPromotedProperties)])

Otherwise accept from a new Slot() as a string but validate and upcast.

Should accept strings but always computes to a PHPTYPE object of some kind and get stores in Slots.

An object should be used so we can abstract to a different validation system later (e.g symfony validator)

[dpi]

I've found https://doc.nette.org/en/utils/type as ideal

[dpi]

This may assist in resolving #27

[dpi]

With @mohit-rocks to determine if the type info is enough to generate UI/schema for XB integration.

Note: the type info should be used downstream by utilising the referenced Nette Utils package above, just as the type validation logic in https://github.com/dpi/pinto/pull/42/files#diff-b92480538a581090018b53ffca3c0e4884f4ba736f71f022ba3e1011c6f7ef19R137 does.