fix: add allowH2 define

Author: fengmk2

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);