feat: fix api spec errors

src/http/params.ts

@@ -6,7 +6,10 @@
  * found in the LICENSE file at https://angular.dev/license
  */
 
-import type { HttpParameterCodec } from '@ngify/http';
+import {
+  type HttpParameterCodec,
+  HttpParams as NgifyHttpParams,
+} from '@ngify/http';
 
 /**
  * Provides encoding and decoding of URL parameter and query-string values.
@@ -298,6 +301,13 @@ export class HttpParams {
     );
   }
 
+  toNgify(): NgifyHttpParams {
+    this.init();
+    return new NgifyHttpParams().appendAll(
+      Object.fromEntries(this.map.entries())
+    );
+  }
+
   private clone(update: Update | Update[]): HttpParams {
     const clone = new HttpParams({
       encoder: this.encoder,