fix: add newly introduced parameter for App.start function to all corresponding usages

src/app.zig

@@ -17,7 +17,7 @@
 ///   );
 ///   // later on create an `App` instance and start the event loop
 ///   var app: App = .init(io, .{}); // provide instance of the `std.Io` and `App` model that shall be used
-///   try app.start();
+///   try app.start(.full);
 ///   defer app.stop() catch unreachable; // does not clean-up the resources used in the model
 /// ```
 pub fn App(comptime M: type, comptime E: type) type {