Implement MacOS and Windows APIs from `hidapi` 0.12 release

[KarlK90]

This PR implements FFI bindings and safe implementations for the following APIs that where added in hidapi release 0.12

MacOS:

• hid_darwin_get_location_id()
• hid_darwin_set_open_exclusive()
• hid_darwin_get_open_exclusive()
• hid_darwin_is_device_open_exclusive()

Windows:

• hid_winapi_get_container_id()

The hid_darwin_set_open_exclusive() API is also put to use by introducing the macos-shared-device feature flag for MacOS so it is possible to have multiple HidDevice handles that access the same physical device.

A convenience addition is the implementation of Debug for HidDevice, this will only print HidDevice but allows wrapping types like HidResult<HidDevice> into a dbg! macro.

[KarlK90]

I've added docs.rs specific metadata and documentation hints in the latest commit and also hid the cfg_libusb_only macro which should be internal(?). The result will look like this:

I find that much nicer, although there are now 2 distinct Impl HidApi blocks in the documentation...

[KarlK90]

@ruabmbua thanks for the swift review, applied changes and added IMHO better platform specific documentation.

[ruabmbua]

Thanks for the contribution!