eframe: add set_minimized and set_maximized (#2292)

* add actions for window controls

* add maximized to WindowInfo
update button text
fix clippy

* add overlap icon when maximized

* remove argument `app`

* remove WindowInfo { maximized }

* Update minimum window size

* Double-click titlebar to toggle maximized state

---------

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>

crates/eframe/src/native/epi_integration.rs

@@ -207,6 +207,8 @@ pub fn handle_app_output(
         window_pos,
         visible: _, // handled in post_present
         always_on_top,
+        minimized,
+        maximized,
     } = app_output;
 
     if let Some(decorated) = decorated {
@@ -250,6 +252,14 @@ pub fn handle_app_output(
             WindowLevel::Normal
         });
     }
+
+    if let Some(minimized) = minimized {
+        window.set_minimized(minimized);
+    }
+
+    if let Some(maximized) = maximized {
+        window.set_maximized(maximized);
+    }
 }
 
 // ----------------------------------------------------------------------------