Transform custom PyEvent into standard python dictionary for easier d…

[haixuanTao]

…ebuggability.

Currently having a custom PyEvent make debugging very hard as fields are hidden within the class PyEvent that is defined within Rust Code.

Python user are getting really confused about this obscure class.

This PR transforms the class into a standard python dictionary.

It also makes external event and dora event expose the same user API meaning to access the data people just use:

data = event["value"] instead of data = event.inner()

[phil-opp]

Looks good overall!

Is this a breaking change or does existing code continue to work?

[haixuanTao]

Ezisting code will continue to work!

Except for ros2-bridge where you will have to change data.inner() -> data["value"] but I think that it is still okay as a breaking change

[phil-opp]

Ezisting code will continue to work!

Except for ros2-bridge where you will have to change data.inner() -> data["value"] but I think that it is still okay as a breaking change

Ok great! The ROS2 bridge change is fine I think given that we still consider it experimental.

[haixuanTao]

Ezisting code will continue to work!
Except for ros2-bridge where you will have to change data.inner() -> data["value"] but I think that it is still okay as a breaking change

Ok great! The ROS2 bridge change is fine I think given that we still consider it experimental.

Yup. It makes the current implementation of the ros2-bridge closer to the rest of dora API