[Interpreter] Adds support for const/let variables to interpreter.

src/interpreter/bytecodes.h

Index: src/interpreter/bytecodes.h
diff --git a/src/interpreter/bytecodes.h b/src/interpreter/bytecodes.h
index aa5234924152f24a25383d980b2685749bd4d2db..2bcbef9cd26dd5ee5b505d0cd5e86db528c0cb73 100644
--- a/src/interpreter/bytecodes.h
+++ b/src/interpreter/bytecodes.h
@@ -235,6 +235,8 @@ namespace interpreter {
   V(JumpIfUndefined, OperandType::kImm8)                                       \
   V(JumpIfUndefinedConstant, OperandType::kIdx8)                               \
   V(JumpIfUndefinedConstantWide, OperandType::kIdx16)                          \
+  V(JumpIfHole, OperandType::kImm8)                                            \
+  V(JumpIfNotHole, OperandType::kImm8)                                         \
                                                                                \
   /* Complex flow control For..in */                                           \
   V(ForInPrepare, OperandType::kRegTriple8)                                    \
@@ -250,7 +252,6 @@ namespace interpreter {
   V(ReThrow, OperandType::kNone)                                               \
   V(Return, OperandType::kNone)
 
-
 // Enumeration of the size classes of operand types used by bytecodes.
 enum class OperandSize : uint8_t {
   kNone = 0,