refactor: use expression bodied accessors where possible

Getters and setters with a single statement in their bodies can be simplified using the arrow operator (`=>`). This eliminates the need for braces, thereby reducing the indentation and lines used.

csharp/Antipattern.cs

@@ -13,15 +13,9 @@ class Person
     // Same as auto-property.
     public string Name
     {
-        get
-        {
-            return _name;
-        }
+        get => _name;
 
-        set
-        {
-            _name = value;
-        }
+        set => _name = value;
     }
 }