feat: export Interceptable (#144)

Author: PierreDemailly

src/index.ts

@@ -13,7 +13,8 @@ import {
   BodyMixin,
   MockAgent,
   mockErrors,
-  MockPool
+  MockPool,
+  Interceptable
 } from "undici";
 
 export * from "./request";
@@ -23,7 +24,6 @@ export * as policies from "./policies";
 export { agents, computeURI, CustomHttpAgent } from "./agents";
 export { DEFAULT_HEADER } from "./utils";
 
-
 export {
   Agent,
   ProxyAgent,
@@ -38,5 +38,6 @@ export {
   BodyMixin,
   MockAgent,
   mockErrors,
-  MockPool
+  MockPool,
+  Interceptable
 };