wrong parsing of user agents behind gcp proxy

[bsafwen]

thanks for the lib. This is probably a NIT and a low priority. Just putting it here in case it turns out to be more important that I think.

Accessing a resource hosted on gcp through the gcp proxy makes the library completely miss the browser name:

expected result
https://uaparser.js.org/?ua=cloud-run-proxy/source%20(darwin/arm64)%20Mozilla/5.0%20(Macintosh;%20Intel%20Mac%20OS%20X%2010_15_7)%20AppleWebKit/537.36%20(KHTML,%20like%20Gecko)%20Chrome/120.0.0.0%20Safari/537.36#try

{
  "ua": "cloud-run-proxy/source (darwin/arm64) Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36",
  "browser": {
    "name": "Chrome",
    "version": "120.0.0.0",
    "major": "120"
  },
  "cpu": {
    "architecture": "arm64"
  },
  "device": {
    "model": "Macintosh",
    "vendor": "Apple"
  },
  "engine": {
    "name": "Blink",
    "version": "120.0.0.0"
  },
  "os": {
    "name": "macOS",
    "version": "10.15.7"
  }
}

instead got

{
 VersionNo:{Major:0 Minor:0 Patch:0}
 OSVersionNo:{Major:10 Minor:15 Patch:7}
 URL: String:cloud-run-proxy/source (darwin/arm64) Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 
 Name:cloud-run-proxy
 Version:source
 OS:macOS
 OSVersion:10.15.7
 Device:
 Mobile:false
 Tablet:false
 Desktop:true
 Bot:false
 }

package main

import (
	"fmt"

	"github.com/mileusna/useragent"
)

func main() {
	ua := `cloud-run-proxy/source (darwin/arm64) Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36`

	u := useragent.Parse(ua)

	fmt.Printf("%+v\n", u)

}