chore(all): move sub-packages to internal/provider

internal/provider/protonvpn/updater/sort.go

@@ -0,0 +1,26 @@
+package protonvpn
+
+import (
+	"sort"
+
+	"github.com/qdm12/gluetun/internal/models"
+)
+
+func sortServers(servers []models.Server) {
+	sort.Slice(servers, func(i, j int) bool {
+		a, b := servers[i], servers[j]
+		if a.Country == b.Country { //nolint:nestif
+			if a.Region == b.Region {
+				if a.City == b.City {
+					if a.ServerName == b.ServerName {
+						return a.Hostname < b.Hostname
+					}
+					return a.ServerName < b.ServerName
+				}
+				return a.City < b.City
+			}
+			return a.Region < b.Region
+		}
+		return a.Country < b.Country
+	})
+}