Add Request.cf support, as well as splitting out startServer and dispatchFetch (#363)

* Add Request.cf support, as well as splitting out `startServer` and `dispatchFetch`

* Support `cfFetch` option

* Refactor into `proxy.ts`

* Simplify

* Address PR comments

* http->tcp

* Simplify approach

* Fix linting

* Further fixes

* Simplify approach

* Make cf properties optional

* logging

Co-authored-by: MrBBot <[email protected]>

Author: penalosa

package-lock.json

@@ -44,7 +44,7 @@
     "glob-to-regexp": "^0.4.1",
     "kleur": "^4.1.5",
     "stoppable": "^1.1.0",
-    "undici": "5.8.2",
+    "undici": "^5.10.0",
     "zod": "^3.18.0"
   },
   "devDependencies": {