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).

wpilibNewCommands/src/main/native/cpp/frc2/command/PrintCommand.cpp

@@ -12,4 +12,6 @@ PrintCommand::PrintCommand(const wpi::Twine& message)
     : CommandHelper{[str = message.str()] { wpi::outs() << str << "\n"; }, {}} {
 }
 
-bool PrintCommand::RunsWhenDisabled() const { return true; }
+bool PrintCommand::RunsWhenDisabled() const {
+  return true;
+}