Fable compatability

[HLWeil]

This PR introduces Fable compatability into the main part of the repo, namely the DynamicObj type.

• Project was restructured to separate Fable-compatible and -incompatible part
• Bindings for ReflectionUtils functions were added for javascript and python.
• Some members were renamed for better differentiability of static and dynamic properties
• Test projects were restuctured, tests rewritten to pyxpecto style and additional tests were added
• Build project was updated and js and py build targets was added

closes #21
closes #22

[HLWeil]

Core features implemented and tested (See Unix tests running).

Windows failing because python runner not recognizing pyxpecto Rocket emoji.

@Freymaurer any ideas?

[Freymaurer]

Core features implemented and tested (See Unix tests running).

Windows failing because python runner not recognizing pyxpecto Rocket emoji.

@Freymaurer any ideas?

Enable unicode for python, see any other pyxpecto tool.

Or maxbe try --silent for reduced output

[kMutagene]

LGTM👍,
I think we can safely ignore that windows tests fail due to them not being able to display the rocket emoji 🚀

Once this is released, i will update Plotly.NET to use this version, that will act as a first "stress test" and may uncover things that are not covered by the current tests.