feat: Create the capitalize() helper

index.html

@@ -614,6 +614,10 @@
              fillCharacterRoster();
          };
 
+         const capitalize = (str) => {
+             return String(str).charAt(0).toUpperCase() + String(str).slice(1);
+         };
+
          document.addEventListener(
              "DOMContentLoaded",
              () => {