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).

simulation/halsim_ws_server/src/main/native/cpp/HALSimHttpConnection.cpp

@@ -169,7 +169,9 @@ void HALSimHttpConnection::ProcessRequest() {
   }
 
   wpi::StringRef path;
-  if (url.HasPath()) path = url.GetPath();
+  if (url.HasPath()) {
+    path = url.GetPath();
+  }
 
   if (m_request.GetMethod() == wpi::HTTP_GET && path.startswith("/") &&
       !path.contains("..")) {