refactor and fix some shit

MareSynchronos/Models/CharacterCache.cs

@@ -88,7 +88,7 @@ namespace MareSynchronos.Models
         }
         public override string ToString()
         {
-            StringBuilder stringBuilder = new StringBuilder();
+            StringBuilder stringBuilder = new();
             foreach (var fileReplacement in FileReplacements.OrderBy(a => a.GamePath))
             {
                 stringBuilder.AppendLine(fileReplacement.ToString());

MareSynchronos/Models/FileReplacement.cs

@@ -119,7 +119,7 @@ namespace MareSynchronos.Models
 
         public override string ToString()
         {
-            StringBuilder builder = new StringBuilder();
+            StringBuilder builder = new();
             builder.AppendLine($"Modded: {HasFileReplacement} - {GamePath} => {ResolvedPath}");
             foreach (var l1 in Associated)
             {