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

internal/provider/perfectprivacy/updater/sort.go

@@ -0,0 +1,13 @@
+package perfectprivacy
+
+import (
+	"sort"
+
+	"github.com/qdm12/gluetun/internal/models"
+)
+
+func sortServers(servers []models.Server) {
+	sort.Slice(servers, func(i, j int) bool {
+		return servers[i].City < servers[j].City
+	})
+}