feat : add elemental ickn

lib/guides/stats.ts

@@ -51,6 +51,11 @@ export function recommendedStatIconName(value: string): string | null {
   return ["hp", "atk", "def", "em", "er"].includes(base) ? base : null;
 }
 
+export function recommendedStatElement(value: string): string | null {
+  const match = /^(Anemo|Geo|Electro|Dendro|Hydro|Pyro|Cryo) DMG%$/u.exec(value);
+  return match?.[1] ?? null;
+}
+
 export function statPriorityColorClass(index: number): string {
   return index === 0
     ? "text-tier-gold"