Add braces to C++ single-line loops and conditionals (NFC) (#2973)

This makes code easier to read and more consistent between C++ and Java.
Also update clang-format settings to always add a line break (even if no braces are used).

wpilibc/src/main/native/cpp/AnalogAccelerometer.cpp

@@ -44,9 +44,13 @@ void AnalogAccelerometer::SetSensitivity(double sensitivity) {
   m_voltsPerG = sensitivity;
 }
 
-void AnalogAccelerometer::SetZero(double zero) { m_zeroGVoltage = zero; }
+void AnalogAccelerometer::SetZero(double zero) {
+  m_zeroGVoltage = zero;
+}
 
-double AnalogAccelerometer::PIDGet() { return GetAcceleration(); }
+double AnalogAccelerometer::PIDGet() {
+  return GetAcceleration();
+}
 
 void AnalogAccelerometer::InitSendable(SendableBuilder& builder) {
   builder.SetSmartDashboardType("Accelerometer");