feat: add AED currency support and user node groups

test_aed_currency.rs

@@ -0,0 +1,22 @@
+use rust_decimal::Decimal;
+use rust_decimal_macros::dec;
+
+fn main() {
+    // Test AED currency conversion
+    let usd_amount = dec!(100.0); // 100 USD
+    let aed_rate = dec!(3.67); // 1 USD = 3.67 AED
+
+    // Convert USD to AED
+    let aed_amount = usd_amount * aed_rate;
+    println!("100 USD = {:.2} AED", aed_amount);
+
+    // Convert AED back to USD
+    let usd_converted_back = aed_amount / aed_rate;
+    println!("{:.2} AED = {:.2} USD", aed_amount, usd_converted_back);
+
+    // Test formatting
+    println!("Formatted AED: د.إ{:.2}", aed_amount);
+    println!("Formatted USD: ${:.2}", usd_amount);
+
+    println!("AED currency test completed successfully!");
+}