style: drop redundant type qualifiers, use explicit types (IDE cleanup)

Pure formatting from the IDE's code cleanup: remove redundant ClassName./namespace qualifiers and replace var with explicit types. No behavior change.

Program.cs

@@ -20,7 +20,7 @@ Log.Logger = new LoggerConfiguration()
 
 try
 {
-    var cfg = new Configuration();
+    Configuration cfg = new();
 
     NativeWindowSettings nativeSettings = new()
     {