fix: add allowH2 define and more (#5392)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Enhanced background processing with improved asynchronous task
handling and performance tracking, contributing to a more responsive
experience.
- Introduced an optional configuration for HTTP/2 support, enabling more
efficient network communications.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

src/app/extend/context.ts

@@ -308,6 +308,14 @@ export default class Context extends EggCoreContext {
 declare module '@eggjs/core' {
   // add Context overrides types
   interface Context {
+    proxy: any;
+    performanceStarttime: number;
+    starttime: number;
+    runInBackground(scope: (ctx: Context) => Promise<void>, taskName?: string): void;
+    _runInBackground(scope: (ctx: Context) => Promise<void>, taskName: string): void;
+    get acceptJSON(): boolean;
+    get query(): Record<string, string>;
+    get queries(): Record<string, string[]>;
     curl(url: HttpClientRequestURL, options?: HttpClientRequestOptions): ReturnType<HttpClient['request']>;
     get router(): Router;
     set router(val: Router);

src/lib/types.ts

@@ -81,6 +81,10 @@ export interface HttpClientConfig {
    * @deprecated keep compatible with egg 3.x, no more used
    */
   useHttpClientNext?: boolean;
+  /**
+   * Allow http2
+   */
+  allowH2?: boolean;
 }
 
 /**

test/index.test-d.ts

@@ -146,6 +146,9 @@ class AppBoot implements ILifecycleBoot {
 }
 
 const app1 = {} as Application;
+
+expectType<boolean>(app1.config.httpclient.allowH2!);
+
 const appBoot = new AppBoot(app1);
 expectType<IBoot>(appBoot);
 expectType<ILifecycleBoot>(appBoot);