Add initial 11ty website structure

website/node_modules/@11ty/eleventy-dev-server/server/ipAddress.js

@@ -0,0 +1,9 @@
+const os = require("node:os");
+
+const INTERFACE_FAMILIES = ["IPv4"];
+
+module.exports = function() {
+    return Object.values(os.networkInterfaces()).flat().filter(interface => {
+        return interface.internal === false && INTERFACE_FAMILIES.includes(interface.family);
+    }).map(interface => interface.address);
+};