refactor(es/types): Extract @swc/types as a small, reusable package (#7834)

**Related issue:**

 - Closes #7828

Author: kdy1

node-swc/src/Visitor.ts

@@ -173,7 +173,7 @@ import {
   WhileStatement,
   WithStatement,
   YieldExpression,
-} from "./types";
+} from "@swc/types";
 
 export class Visitor {
   visitProgram(n: Program): Program {

node-swc/src/index.ts

@@ -1,5 +1,5 @@
 import { resolve } from "path";
-import {
+import type {
   Plugin,
   ParseOptions,
   Module,
@@ -8,8 +8,8 @@ import {
   Script,
   Program,
   JsMinifyOptions,
-} from "./types";
-export * from "./types";
+} from "@swc/types";
+export * from "@swc/types";
 import { BundleInput, compileBundleOptions } from "./spack";
 import * as assert from "assert";
 

node-swc/src/spack.ts

@@ -1,6 +1,6 @@
 import * as path from 'path';
 
-import { Options } from "./types";
+import { Options } from "@swc/types";
 
 export type BundleInput = BundleOptions | BundleOptions[];