[api] Add a switch that controls if ES2015 tail call elimination feature is enabled or not.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index dea23a44f3df6e8e23496002d3bf913b48bd6c03..38c22db645ffd95e312788502e23887b5a3e3d7a 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -8089,6 +8089,15 @@ void Debug::SetLiveEditEnabled(Isolate* isolate, bool enable) {
   internal_isolate->debug()->set_live_edit_enabled(enable);
 }
 
+bool Debug::IsTailCallEliminationEnabled(Isolate* isolate) {
+  i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
+  return internal_isolate->is_tail_call_elimination_enabled();
+}
+
+void Debug::SetTailCallEliminationEnabled(Isolate* isolate, bool enabled) {
+  i::Isolate* internal_isolate = reinterpret_cast<i::Isolate*>(isolate);
+  internal_isolate->SetTailCallEliminationEnabled(enabled);
+}
 
 MaybeLocal<Array> Debug::GetInternalProperties(Isolate* v8_isolate,
                                                Local<Value> value) {