feat(request): Make request.ts available throught JSR for frameworks …

…that need to instantiate HonoRequest (#3425)

* Update jsr.json

* Update jsr.json

jsr.json

@@ -13,6 +13,7 @@
   ],
   "exports": {
     ".": "./src/index.ts",
+    "./request": "./src/request.ts",
     "./types": "./src/types.ts",
     "./hono-base": "./src/hono-base.ts",
     "./tiny": "./src/preset/tiny.ts",
@@ -116,4 +117,4 @@
       "src/**/*.test.tsx"
     ]
   }
-}
+}