[Interpreter] Add wide context slot load / store operations.

src/interpreter/bytecodes.h

Index: src/interpreter/bytecodes.h
diff --git a/src/interpreter/bytecodes.h b/src/interpreter/bytecodes.h
index 8af20f7e6d0d0c9978ddbe95b19c3708ea58c1d5..a9beb6c918edd871d55f5c1f889352c3cfe754be 100644
--- a/src/interpreter/bytecodes.h
+++ b/src/interpreter/bytecodes.h
@@ -67,6 +67,8 @@ namespace interpreter {
   V(PopContext, OperandType::kReg8)                                            \
   V(LdaContextSlot, OperandType::kReg8, OperandType::kIdx8)                    \
   V(StaContextSlot, OperandType::kReg8, OperandType::kIdx8)                    \
+  V(LdaContextSlotWide, OperandType::kReg8, OperandType::kIdx16)               \
+  V(StaContextSlotWide, OperandType::kReg8, OperandType::kIdx16)               \
                                                                                \
   /* Load-Store lookup slots */                                                \
   V(LdaLookupSlot, OperandType::kIdx8)                                         \