feat: Refactor server implementation to support Bun and Node environments

- Introduced `ServerNode` and `BunServer` classes to handle server logic for Node and Bun respectively.
- Updated `App` class to initialize the appropriate server based on the runtime environment.
- Enhanced `parseBody` function to handle request body parsing for both environments.
- Modified WebSocket handling to support Bun's WebSocket upgrade mechanism.
- Improved error handling and response structure across the server implementation.
- Added support for custom middleware in the server's request handling.
- Refactored server base functionality into `ServerBase` for better code organization.
- Updated type definitions to reflect changes in server options and listener handling.
- Added a new demo for testing the server functionality with various request types.

src/server/server-type.ts

@@ -0,0 +1,70 @@
+import * as http from 'http';
+
+export type Listener = {
+  id?: string;
+  io?: boolean;
+  path?: string;
+  fun: (...args: any[]) => Promise<void> | void;
+}
+export type ListenerFun = (...args: any[]) => Promise<void> | void;
+export type OnListener = Listener | Listener[] | ListenerFun | ListenerFun[];
+export type Cors = {
+  /**
+   * @default '*''
+   */
+  origin?: string | undefined;
+};
+
+export type ServerOpts<T = {}> = {
+  /**path default `/api/router` */
+  path?: string;
+  /**handle Fn */
+  handle?: (msg?: { path: string; key?: string;[key: string]: any }, ctx?: { req: http.IncomingMessage; res: http.ServerResponse }) => any;
+  cors?: Cors;
+  io?: boolean;
+} & T;
+
+export interface ServerType {
+  path?: string;
+  server?: any;
+  handle: ServerOpts['handle'];
+  setHandle(handle?: any): void;
+  listeners: Listener[];
+  listen(port: number, hostname?: string, backlog?: number, listeningListener?: () => void): void;
+  listen(port: number, hostname?: string, listeningListener?: () => void): void;
+  listen(port: number, backlog?: number, listeningListener?: () => void): void;
+  listen(port: number, listeningListener?: () => void): void;
+  listen(path: string, backlog?: number, listeningListener?: () => void): void;
+  listen(path: string, listeningListener?: () => void): void;
+  listen(handle: any, backlog?: number, listeningListener?: () => void): void;
+  listen(handle: any, listeningListener?: () => void): void;
+  /**
+   * 兜底监听，当除开 `/api/router` 之外的请求，框架只监听一个api，所以有其他的请求都执行其他的监听
+   * @description 主要是为了兼容其他的监听
+   * @param listener
+   */
+  on(listener: OnListener): void;
+  onWebSocket({ ws, message, pathname, token, id }: { ws: WS; message: string | Buffer; pathname: string, token?: string, id?: string }): void;
+}
+
+type WS = {
+  send: (data: any) => void;
+  close: () => void;
+}
+
+export type CommonReq = {
+  url: string;
+  method: string;
+  headers: Record<string, string>;
+  [key: string]: any;
+}
+
+export type CommonRes = {
+  statusCode: number;
+  writableEnded: boolean;
+  writeHead: (statusCode: number, headers?: Record<string, string>) => void;
+  setHeader: (name: string, value: string | string[]) => void;
+  cookie: (name: string, value: string, options?: any) => void;
+  end: (data?: any) => void;
+  [key: string]: any;
+}