bug: hidapi feature SensorType implementation

[Goldenbough44]

Rust error E0004 (https://doc.rust-lang.org/error_codes/E0004.html) when enabling the library's hidapi feature due to the difference between the library's SensorType implementation and SDL's SDL_SensorType implementation.

The error would be vanished simply by editing sensor.rs file from:

impl From<SensorType> for SDL_SensorType {
    fn from(val: SensorType) -> Self {
        match val {
            SensorType::Unknown => SDL_SensorType::SDL_SENSOR_UNKNOWN,
            SensorType::Gyroscope => SDL_SensorType::SDL_SENSOR_GYRO,
            SensorType::Accelerometer => SDL_SensorType::SDL_SENSOR_ACCEL,
        }
    }
}

into:

impl From<SensorType> for SDL_SensorType {
    fn from(val: SensorType) -> Self {
        match val {
            SensorType::Unknown => SDL_SensorType::SDL_SENSOR_UNKNOWN,
            SensorType::Gyroscope => SDL_SensorType::SDL_SENSOR_GYRO,
            SensorType::Accelerometer => SDL_SensorType::SDL_SENSOR_ACCEL,
            _ => SDL_SensorType::SDL_SENSOR_UNKNOWN,
        }
    }
}

However, this approach doesn't really solve the problem.

Current SDL-sys bindings are:

#[repr(i32)]
#[derive(Copy, Clone, Hash, PartialEq, Eq)]
pub enum SDL_SensorType {
    #[doc = "< Returned for an invalid sensor"]
    SDL_SENSOR_INVALID = -1,
    #[doc = "< Unknown sensor type"]
    SDL_SENSOR_UNKNOWN = 0,
    #[doc = "< Accelerometer"]
    SDL_SENSOR_ACCEL = 1,
    #[doc = "< Gyroscope"]
    SDL_SENSOR_GYRO = 2,
    #[doc = "< Accelerometer for left Joy-Con controller and Wii nunchuk"]
    SDL_SENSOR_ACCEL_L = 3,
    #[doc = "< Gyroscope for left Joy-Con controller"]
    SDL_SENSOR_GYRO_L = 4,
    #[doc = "< Accelerometer for right Joy-Con controller"]
    SDL_SENSOR_ACCEL_R = 5,
    #[doc = "< Gyroscope for right Joy-Con controller"]
    SDL_SENSOR_GYRO_R = 6,
}

but the library's SensorType implementation is:

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum SensorType {
    Unknown,
    Gyroscope,
    Accelerometer,
}

I'm not sure why this difference occurs as I haven't looked at the library in detail, but I guess the library needs to be modified to match the SDL-sys implementation.