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).

cameraserver/multiCameraServer/src/main/native/cpp/main.cpp

@@ -143,7 +143,9 @@ bool ReadConfig() {
   // cameras
   try {
     for (auto&& camera : j.at("cameras")) {
-      if (!ReadCameraConfig(camera)) return false;
+      if (!ReadCameraConfig(camera)) {
+        return false;
+      }
     }
   } catch (const wpi::json::exception& e) {
     ParseError() << "could not read cameras: " << e.what() << '\n';
@@ -164,10 +166,14 @@ void StartCamera(const CameraConfig& config) {
 }  // namespace
 
 int main(int argc, char* argv[]) {
-  if (argc >= 2) configFile = argv[1];
+  if (argc >= 2) {
+    configFile = argv[1];
+  }
 
   // read configuration
-  if (!ReadConfig()) return EXIT_FAILURE;
+  if (!ReadConfig()) {
+    return EXIT_FAILURE;
+  }
 
   // start NetworkTables
   auto ntinst = nt::NetworkTableInstance::GetDefault();
@@ -180,8 +186,12 @@ int main(int argc, char* argv[]) {
   }
 
   // start cameras
-  for (auto&& camera : cameras) StartCamera(camera);
+  for (auto&& camera : cameras) {
+    StartCamera(camera);
+  }
 
   // loop forever
-  for (;;) std::this_thread::sleep_for(std::chrono::seconds(10));
+  for (;;) {
+    std::this_thread::sleep_for(std::chrono::seconds(10));
+  }
 }