Create gopkgs directory for golang libs

- Created a gopkgs directory and registered it with default.nix's readTree
- Moved monzo_ynab/utils -> gopkgs
- Consumed utils.go in main.go
- Renamed monzo_ynab -> job

monzo_ynab/utils.go

@@ -1,49 +0,0 @@
-package main
-
-import "log"
-
-func failOn(err error) {
-	if err != nil {
-		log.Fatal(err)
-	}
-}
-
-// Make a simple GET request to `url`. Fail if anything returns an error. I'd
-// like to accumulate a library of these, so that I can write scrappy Go
-// quickly. For now, this function just returns the body of the response back as
-// a string.
-func simpleGet(url string, headers map[string]string, debug bool) string {
-	client := &http.Client{}
-	req, err := http.NewRequest("GET", url, nil)
-	if err != nil {
-		log.Fatal(err)
-	}
-	for k, v := range headers {
-		req.Header.Add(k, v)
-	}
-
-	res, err := client.Do(req)
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer res.Body.Close()
-
-	if debug {
-		bytes, _ := httputil.DumpRequest(req, true)
-		log.Println(string(bytes))
-		bytes, _ = httputil.DumpResponse(res, true)
-		log.Println(string(bytes))
-	}
-
-	if res.StatusCode == http.StatusOK {
-		bytes, err := ioutil.ReadAll(res.Body)
-		if err != nil {
-			log.Fatal(err)
-		}
-		return string(bytes)
-	} else {
-		log.Println(res)
-		log.Fatalf("HTTP status code of response not OK: %v\n", res.StatusCode)
-		return ""
-	}
-}