LibJS/Bytecode: Handle ImportStatement in codegen

There is nothing to do here at runtime as imports are handled in
`Interpreter::run`.

Userland/Libraries/LibJS/Bytecode/ASTCodegen.cpp

@@ -2867,4 +2867,9 @@ Bytecode::CodeGenerationErrorOr<void> ExportStatement::generate_bytecode(Bytecod
     return {};
 }
 
+Bytecode::CodeGenerationErrorOr<void> ImportStatement::generate_bytecode(Bytecode::Generator&) const
+{
+    return {};
+}
+
 }