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

internal/provider/wevpn/updater/hostname.go

@@ -0,0 +1,24 @@
+package wevpn
+
+import "strings"
+
+func getHostnameFromCity(city string) (hostname string) {
+	host := strings.ToLower(city)
+	host = strings.ReplaceAll(host, ".", "")
+	host = strings.ReplaceAll(host, " ", "")
+
+	specialCases := map[string]string{
+		"washingtondc": "washington",
+		"mexicocity":   "mexico",
+		"denizli":      "bursa",
+		"sibu":         "kualalumpur",
+		"kiev":         "kyiv",
+		"stpetersburg": "petersburg",
+	}
+	if specialHost, ok := specialCases[host]; ok {
+		host = specialHost
+	}
+
+	hostname = host + ".wevpn.com"
+	return hostname
+}