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/simulation/AnalogOutputSim.cpp

@@ -53,4 +53,6 @@ void AnalogOutputSim::SetInitialized(bool initialized) {
   HALSIM_SetAnalogOutInitialized(m_index, initialized);
 }
 
-void AnalogOutputSim::ResetData() { HALSIM_ResetAnalogOutData(m_index); }
+void AnalogOutputSim::ResetData() {
+  HALSIM_ResetAnalogOutData(m_index);
+}