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).

hal/src/main/native/sim/mockdata/RoboRioData.cpp

@@ -36,7 +36,9 @@ void RoboRioData::ResetData() {
 }
 
 extern "C" {
-void HALSIM_ResetRoboRioData(void) { SimRoboRioData->ResetData(); }
+void HALSIM_ResetRoboRioData(void) {
+  SimRoboRioData->ResetData();
+}
 
 #define DEFINE_CAPI(TYPE, CAPINAME, LOWERNAME)                          \
   HAL_SIMDATAVALUE_DEFINE_CAPI_NOINDEX(TYPE, HALSIM, RoboRio##CAPINAME, \