chore(publicip): refactoring

- Exported `Fetcher` interface
- Inject `Fetcher` to publicip loop and updaters
- Get public IP and information at the same time
- Only query ipinfo.io
- Make `MultiInfo` part of the `Fetch` object

internal/provider/privado/provider.go

@@ -2,7 +2,6 @@ package privado
 
 import (
 	"math/rand"
-	"net/http"
 
 	"github.com/qdm12/gluetun/internal/constants/providers"
 	"github.com/qdm12/gluetun/internal/provider/common"
@@ -18,14 +17,14 @@ type Provider struct {
 }
 
 func New(storage common.Storage, randSource rand.Source,
-	client *http.Client, unzipper common.Unzipper,
+	ipFetcher common.IPFetcher, unzipper common.Unzipper,
 	updaterWarner common.Warner,
 	parallelResolver common.ParallelResolver) *Provider {
 	return &Provider{
 		storage:         storage,
 		randSource:      randSource,
 		NoPortForwarder: utils.NewNoPortForwarding(providers.Privado),
-		Fetcher:         updater.New(client, unzipper, updaterWarner, parallelResolver),
+		Fetcher:         updater.New(ipFetcher, unzipper, updaterWarner, parallelResolver),
 	}
 }