Draft: hardware: Create ObjectRefListProperty for BLISS

This MR allow to handle a ObjectRefListProperty (list of BLISS object references).

For now this stuff from BLISS is not shared by events but is static (at runtime).

As result i have patched the Daiquiri BlissObject to allow to read such data with get instead of using event.

I think it would be good to rework this part of the code to make it available for any other kind of properties (in declarative way).

Basically allow to flag the event as "not available", or the property as "const". I will most probably implement the first option.

What do you think?