[ignition] Add bytecodes for loads/stores in the current context

src/interpreter/interpreter.h

Index: src/interpreter/interpreter.h
diff --git a/src/interpreter/interpreter.h b/src/interpreter/interpreter.h
index 31d4e05d407ffe46395c19e2f096a114d49ec5c6..4fb4429250eaa7d7926f7e23fafcb9282e5f5cf7 100644
--- a/src/interpreter/interpreter.h
+++ b/src/interpreter/interpreter.h
@@ -142,6 +142,9 @@ class Interpreter {
   // Generates code to load a context slot.
   compiler::Node* BuildLoadContextSlot(InterpreterAssembler* assembler);
 
+  // Generates code to load a slot in the current context.
+  compiler::Node* BuildLoadCurrentContextSlot(InterpreterAssembler* assembler);
+
   // Generates code to load a global.
   compiler::Node* BuildLoadGlobal(Callable ic, compiler::Node* context,
                                   compiler::Node* feedback_slot,