Add more input trait impls for open drain outputs

[jneem]

This adds embedded_hal_1::digital::InputPin and embedded_hal_async::Wait implementations for GpioPin<Output<OpenDrain>, _>. Previously, there was only an impl of embedded_hal::digital::v2::InputPin, so I'm assuming that the others were just left out unintentionally.

Must

• The code compiles without errors or warnings.
• All examples work.
• cargo fmt was run.
• Your changes were added to the CHANGELOG.md in the proper section.
• You updated existing examples or added examples (if applicable).
• Added examples are checked in CI

Nice to have

• You add a description of your work to this PR.
• You added proper docs for your newly added features and code.

[bjoernQ]

LGTM

[JurajSadel]

LGTM