Report errors

[tomasjakubik]

Add hooks for errors

• CAN controller errors via socketcan
• when dropping a Tx frame

[coveralls]

coverage: 93.402% (-0.4%) from 93.785%
when pulling 463b291 on tomasjakubik:report-errors
into 9c97bd1 on OpenCyphal:master.

[tomasjakubik]

@pavel-kirienko Please have a look when you have time.
I am not sure that the hook/callback architecture is the way to go, so feel free to suggest something better.
I don't like the coverage decrease, but I am not sure if we can test this code reasonably without hardware 🤷.

Those two fixes for libpcap and SOL_CAN_RAW might probably go to a minor patch version if needed.
edit: Libcap was fixed and the commit dropped.

[tomasjakubik]

I think the missing setuptools came from the updated libpcap which changed the dependency.

As for the missing bpf_program it is probably also linked with changes in libpcap. I am looking into it.

[pavel-kirienko]

This is fine but we need to avoid API breakage. Please tweak the arguments as suggested. You will also need to undo some of the changes to the test suite since they will no longer be necessary.

[pavel-kirienko]

Suggested change

	error_handler: typing.Optional[ErrorHandler],
	no_automatic_retransmission: bool,
	no_automatic_retransmission: bool,
	error_handler: ErrorHandler | None = None,

A default is needed to avoid API breakage. Please update implementations.