🚧 add country code flag emoji function

src/lib/countryCodeToFlagEmoji.ts

@@ -0,0 +1,6 @@
+export function countryCodeToFlagEmoji(isoAlpha2: string) {
+    const codePoints = [...isoAlpha2.toUpperCase()].map(
+        (char) => 0x1f1e6 + char.charCodeAt(0) - 65
+    );
+    return String.fromCodePoint(...codePoints);
+}