[turbofan] Add DebugBreak machine operator and support

src/compiler/code-assembler.cc

Index: src/compiler/code-assembler.cc
diff --git a/src/compiler/code-assembler.cc b/src/compiler/code-assembler.cc
index 0a90b9e9251130c1b5fe1d872aa9d3d24f73ef8d..334f5c428095044f6547ef531d12d18f213d8e6b 100644
--- a/src/compiler/code-assembler.cc
+++ b/src/compiler/code-assembler.cc
@@ -131,6 +131,8 @@ void CodeAssembler::Return(Node* value) {
   return raw_assembler_->Return(value);
 }
 
+void CodeAssembler::DebugBreak() { raw_assembler_->DebugBreak(); }
+
 void CodeAssembler::Bind(CodeAssembler::Label* label) { return label->Bind(); }
 
 Node* CodeAssembler::LoadFramePointer() {