app, app/internal: [wasm,android] new Option to set Orientation

Signed-off-by: Inkeliz <inkeliz@inkeliz.com>

app/internal/wm/window.go

@@ -28,6 +28,7 @@ type Options struct {
 	WindowMode      *WindowMode
 	StatusColor     *color.NRGBA
 	NavigationColor *color.NRGBA
+	Orientation     *Orientation
 }
 
 type WindowMode uint8
@@ -37,6 +38,14 @@ const (
 	Fullscreen
 )
 
+type Orientation uint8
+
+const (
+	AnyOrientation Orientation = iota
+	LandscapeOrientation
+	PortraitOrientation
+)
+
 type FrameEvent struct {
 	system.FrameEvent