[wpilib] Deprecate Accelerometer and Gyro interfaces (#5445)

Accelerometer is hyper-specific to ADXL accelerometers, and Gyro is
less useful now that 3D IMUs are prevalent, and if those IMUs want to
support the Gyro interface, they also need to provide a way to set the
axis used for the Gyro interface, which is confusing. Higher-order
functions (e.g., lambdas) are a more flexible interface boundary than
interfaces, but they didn't exist when these interfaces were
created.

wpilibc/src/main/native/cpp/AnalogGyro.cpp

@@ -133,6 +133,10 @@ void AnalogGyro::Calibrate() {
   FRC_CheckErrorStatus(status, "Channel {}", m_analog->GetChannel());
 }
 
+Rotation2d AnalogGyro::GetRotation2d() const {
+  return units::degree_t{-GetAngle()};
+}
+
 std::shared_ptr<AnalogInput> AnalogGyro::GetAnalogInput() const {
   return m_analog;
 }