Maintenance: split each provider in a package

- Fix VyprVPN port
- Fix missing Auth overrides

internal/constants/openvpn.go

@@ -4,3 +4,13 @@ const (
 	TUN = "tun0"
 	TAP = "tap0"
 )
+
+const (
+	AES128cbc = "aes-128-cbc"
+	AES256cbc = "aes-256-cbc"
+	AES128gcm = "aes-128-gcm"
+	AES256gcm = "aes-256-gcm"
+	SHA1      = "sha1"
+	SHA256    = "sha256"
+	SHA512    = "sha512"
+)