io: add error kinds from std.

rust-embedded / embedded-hal

A Hardware Abstraction Layer (HAL) for embedded systems

Apache License 2.0

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Closed Dirbaio closed 1 year ago

Dirbaio commented 1 year ago

depends on #466

This copies all stable variants from std::io::ErrorKind, except:

WouldBlock is removed, since embedded-io traits are always blocking. See the crate-level documentation for details.
WriteZero is removed, since it is a separate variant in [WriteAllError] and [WriteFmtError].