feat: Make it possible to load the character roster from localStorage

index.html

@@ -523,6 +523,17 @@
              saveCharacterRoster();
          };
 
+         const loadCharacterRoster = (doLocalStorageCheck) => {
+             if (doLocalStorageCheck && !checkLocalStorage()) {
+                 alert("Local Storage is not available, cannot load roster.");
+
+                 return;
+             }
+
+             var newRoster = localStorage.getItem("character-roster");
+             characterRoster = (newRoster === null) ? {} : JSON.parse(newRoster);
+         };
+
          document.addEventListener(
              "DOMContentLoaded",
              () => {
@@ -539,6 +550,7 @@
                  btnSaveCharacter.addEventListener("click", saveCurrentCharacter);
 
                  clearSheet();
+                 loadCharacterRoster(true);
              },
          );
         </script>