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).

wpiutil/src/main/native/cpp/uv/NetworkStream.cpp

@@ -15,10 +15,11 @@ void NetworkStream::Listen(int backlog) {
   Invoke(&uv_listen, GetRawStream(), backlog,
          [](uv_stream_t* handle, int status) {
            auto& h = *static_cast<NetworkStream*>(handle->data);
-           if (status < 0)
+           if (status < 0) {
              h.ReportError(status);
-           else
+           } else {
              h.connection();
+           }
          });
 }