Add typescript dev dependency

src/types.d.ts

@@ -0,0 +1,12 @@
+type UFCEvent = {
+  name: string;
+  url: URL;
+  date: string;
+  location: string;
+  fightCard: string[];
+  mainCard: string[];
+  prelims: string[];
+  earlyPrelims: string[];
+  prelimsTime: string | undefined;
+  earlyPrelimsTime: string | undefined;
+};