Add desktop games, robot pet and TCG app

src/lib/games/highScore.ts

@@ -0,0 +1,19 @@
+function storageKey(gameName: string): string {
+	return `${gameName}-high-score`;
+}
+
+export function loadHighScore(gameName: string): number {
+	try {
+		return Number(localStorage.getItem(storageKey(gameName))) || 0;
+	} catch {
+		return 0;
+	}
+}
+
+export function saveHighScore(gameName: string, score: number) {
+	try {
+		localStorage.setItem(storageKey(gameName), String(score));
+	} catch {
+		return;
+	}
+}