Define structure of Viua objects

[marekjm]

Current definition of Viua objects is too imprecise (or does not exist at all, depending on how one looks at it).

Objects should have a type (used to link an object to it's class definition; e.g. for dynamic dispatch) and a set of named slots (member variables). A slot can be accessed (for reading or writing) using its name given as a string. Values stored in slots can be freely changed during the lifetime of an object.

Defining structure of objects that have both native Viua classes and classes created in C++ in their inheritance hierarchy is beyond the scope of this issue.

[marekjm]

There is basic documentation at docs.viuavm.org manuals.