Instrument sync and async method calls (#28893)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/28893

`JSIExecutor::callSerializableNativeHook` converts the arguments from `JSI::Value` to `folly::dynamic`. Then, `RCTNativeModule` converts the arguments from `folly::dynamic` to ObjC data structures in its `static invokeInner` function.

Therefore, I decided to start the sync markers inside `JSIExecutor::callSerializableNativeHook`, which required me to expose these two methode `ModuleRegistry::getModuleName` and `ModuleRegistry::getModuleSyncMethodName`. This shouldn't modify performance because we eagerly generate a NativeModule's methods when it's first required. So, at worst, this is doing a cache lookup.

Changelog: [Internal]

Reviewed By: PeteTheHeat

Differential Revision: D21443610

fbshipit-source-id: 67cf563b0b06153e56e63ba7e186eea31eafc853

ReactCommon/cxxreact/CxxNativeModule.cpp

@@ -58,6 +58,18 @@ std::string CxxNativeModule::getName() {
   return name_;
 }
 
+std::string CxxNativeModule::getSyncMethodName(unsigned int reactMethodId) {
+  if (reactMethodId >= methods_.size()) {
+    throw std::invalid_argument(folly::to<std::string>(
+        "methodId ",
+        reactMethodId,
+        " out of range [0..",
+        methods_.size(),
+        "]"));
+  }
+  return methods_[reactMethodId].name;
+}
+
 std::vector<MethodDescriptor> CxxNativeModule::getMethods() {
   lazyInit();