Implement revamped RedrawRequested on Windows (#1050)

* Move event loop runner to runner module

* Implement new redraw API

Author: Osspial

examples/window.rs

@@ -20,7 +20,10 @@ fn main() {
                 event: WindowEvent::CloseRequested,
                 window_id,
             } if window_id == window.id() => *control_flow = ControlFlow::Exit,
-            _ => *control_flow = ControlFlow::Wait,
+            Event::MainEventsCleared => {
+                window.request_redraw();
+            }
+            _ => *control_flow = ControlFlow::Poll,
         }
     });
 }

src/lib.rs

@@ -50,7 +50,7 @@
 //!     match event {
 //!         Event::MainEventsCleared => {
 //!             // Application update code.
-//!     
+//!
 //!             // Queue a RedrawRequested event.
 //!             window.request_redraw();
 //!         },