Enable Clang Tidy (#1586)

Summary:
X-link: https://github.com/facebook/litho/pull/976

Pull Request resolved: https://github.com/facebook/yoga/pull/1586

X-link: https://github.com/facebook/react-native/pull/43299

Add the React Clang Tidy config to Yoga, run the auto fixes, and make some manual mechanical tweaks.

Notably, the automatic changes to the infra for generating a Yoga tree from JSON capture make it 70% faster.

Before:
{F1463947076}

After:
{F1463946802}

This also cleans up all the no-op shallow const parameters in headers.

{F1463943386}

Not all checks are available in all environments, but that is okay, as Clang Tidy will gracefully skip them.

Changelog: [Internal]

Reviewed By: sammy-SC

Differential Revision: D54461054

fbshipit-source-id: dbd2d9ce51afd3174d1f2c6d439fa7d08baff46f

tests/YGMeasureCacheTest.cpp

@@ -50,7 +50,7 @@ static YGSize _measure_84_49(
     float /*height*/,
     YGMeasureMode /*heightMode*/) {
   int* measureCount = (int*)YGNodeGetContext(node);
-  if (measureCount) {
+  if (measureCount != nullptr) {
     (*measureCount)++;
   }