Add type for gpio::AnyPin

This makes it possible to safely implement the InputPin and OutputPin
traits for AnyPin. Now you can convert any pin to AnyPin with the
appropriate type and use it in other library modules

Added:
- Peripheral implementation for AnyPin
- Implementation of Pin for AnyPin
- Implementation of OutputPin for AnyPin with type IsOutputPin
- Implementation of InputPin for AnyPin with type IsInputPin
- Upgrade types for AnyPin (for example InputOutputAnalogPinType ->
InputOutputPinType)
- Implementation of From<Gpio> for AnyPin with the appropriate type

Changed:
- The Gpio::degrage method returns AnyPin with the appropriate type

undefined

esp-hal-common/src/analog/adc/esp32.rs

@@ -423,6 +423,7 @@ macro_rules! impl_adc_interface {
     }
 }
 
+#[allow(unused_imports)]
 pub use implementation::*;
 
 mod implementation {