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).

wpilibcExamples/src/main/cpp/examples/Frisbeebot/cpp/Robot.cpp

@@ -17,7 +17,9 @@ void Robot::RobotInit() {}
  * <p> This runs after the mode specific periodic functions, but before
  * LiveWindow and SmartDashboard integrated updating.
  */
-void Robot::RobotPeriodic() { frc2::CommandScheduler::GetInstance().Run(); }
+void Robot::RobotPeriodic() {
+  frc2::CommandScheduler::GetInstance().Run();
+}
 
 /**
  * This function is called once each time the robot enters Disabled mode. You
@@ -64,5 +66,7 @@ void Robot::TeleopPeriodic() {}
 void Robot::TestPeriodic() {}
 
 #ifndef RUNNING_FRC_TESTS
-int main() { return frc::StartRobot<Robot>(); }
+int main() {
+  return frc::StartRobot<Robot>();
+}
 #endif

wpilibcExamples/src/main/cpp/examples/Frisbeebot/cpp/subsystems/DriveSubsystem.cpp

@@ -35,9 +35,13 @@ double DriveSubsystem::GetAverageEncoderDistance() {
   return (m_leftEncoder.GetDistance() + m_rightEncoder.GetDistance()) / 2.0;
 }
 
-frc::Encoder& DriveSubsystem::GetLeftEncoder() { return m_leftEncoder; }
+frc::Encoder& DriveSubsystem::GetLeftEncoder() {
+  return m_leftEncoder;
+}
 
-frc::Encoder& DriveSubsystem::GetRightEncoder() { return m_rightEncoder; }
+frc::Encoder& DriveSubsystem::GetRightEncoder() {
+  return m_rightEncoder;
+}
 
 void DriveSubsystem::SetMaxOutput(double maxOutput) {
   m_drive.SetMaxOutput(maxOutput);

wpilibcExamples/src/main/cpp/examples/Frisbeebot/cpp/subsystems/ShooterSubsystem.cpp

@@ -26,10 +26,18 @@ void ShooterSubsystem::UseOutput(double output, double setpoint) {
                             m_shooterFeedforward.Calculate(kShooterTargetRPS));
 }
 
-bool ShooterSubsystem::AtSetpoint() { return m_controller.AtSetpoint(); }
+bool ShooterSubsystem::AtSetpoint() {
+  return m_controller.AtSetpoint();
+}
 
-double ShooterSubsystem::GetMeasurement() { return m_shooterEncoder.GetRate(); }
+double ShooterSubsystem::GetMeasurement() {
+  return m_shooterEncoder.GetRate();
+}
 
-void ShooterSubsystem::RunFeeder() { m_feederMotor.Set(kFeederSpeed); }
+void ShooterSubsystem::RunFeeder() {
+  m_feederMotor.Set(kFeederSpeed);
+}
 
-void ShooterSubsystem::StopFeeder() { m_feederMotor.Set(0); }
+void ShooterSubsystem::StopFeeder() {
+  m_feederMotor.Set(0);
+}