Ensure casing is ignored when sorting input list

src/main/java/be/seeseepuff/pcinv/services/AssetService.java

@@ -291,7 +291,7 @@ public class AssetService {
             entries = repository.findAll();
         }
 
-        Set<String> inputList = new TreeSet<>();
+        var inputList = new TreeSet<String>(Comparator.comparing(String::toLowerCase));
         for (var entry : entries) {
             String entryType;
             if (entry instanceof Asset asset) {