add bindable properties for state machines

This PR sets the fundamental pieces for PRs that will be coming afterward to support data binding state machines.
The most important parts are:
- bindable properties that will be used as binding points for conditions, listeners, and blend animations
- data bind objects don't extend from Component anymore to decouple them from artboards
- because of that, now data bind objects are written in the context of their bound object so there is a unified way for setting data bind targets

The rest is the usual boilerplate code from core objects and some inheritance changes

Diffs=
b5f342002 add bindable properties for state machines (#7640)

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+b5f342002be71c61608ad6c37835349eb4e7c719