feat: rest 参数（function f(...args)），实参区收集数组

crates/oxide_emit/src/stmt/declaration/function_decl.rs

@@ -32,6 +32,9 @@ impl Emitter {
                 }),
             }
         }
+        if let Some(rest) = &fd.params.rest {
+            self.push_rest_param(&rest.rest.argument, &mut param_names)?;
+        }
         let body_stmts: &[Statement] = if let Some(body) = &fd.body { &body.statements } else { &[] };
         let mut sub_module = if fd.generator {
             self.compile_generator_body(&param_names, body_stmts, ctx)?