Refactor wireguard to use a different config dir instead of /etc/wireguard

src/utils/derive-wireguard-interface-name.ts

@@ -0,0 +1,9 @@
+const WIREGUARD_INTERFACE_NAME_PREFIX = `wgui`;
+
+type Params = {
+    host_id: number;
+};
+
+export default function deriveWireguardInterfaceName({ host_id }: Params) {
+    return `${WIREGUARD_INTERFACE_NAME_PREFIX}${host_id}`;
+}