Added basic raycaster demo. I have no idea why I did this.

examples/raycaster/main.go

@@ -0,0 +1,41 @@
+package main
+
+import "git.tebibyte.media/sashakoshka/tomo"
+import "git.tebibyte.media/sashakoshka/tomo/layouts/basic"
+import "git.tebibyte.media/sashakoshka/tomo/elements/basic"
+import _ "git.tebibyte.media/sashakoshka/tomo/backends/x"
+
+func main () {
+	tomo.Run(run)
+}
+
+func run () {
+	window, _ := tomo.NewWindow(640, 480)
+	window.SetTitle("Raycaster")
+
+	container := basicElements.NewContainer(basicLayouts.Vertical { true, true })
+	window.Adopt(container)
+
+	game := NewGame (DefaultWorld {
+		Data: []int {
+		        1,1,1,1,1,1,1,1,1,1,
+		        1,0,0,0,0,0,0,0,0,1,
+		        1,0,0,0,0,0,0,0,0,1,
+		        1,0,0,1,1,0,1,0,0,1,
+		        1,0,0,1,0,0,1,0,0,1,
+		        1,0,0,1,0,0,1,0,0,1,
+		        1,0,0,1,0,1,1,0,0,1,
+		        1,0,0,0,0,0,0,0,0,1,
+		        1,0,0,0,0,0,0,0,0,1,
+		        1,1,1,1,1,1,1,1,1,1,
+		},
+		Stride: 10,
+	})
+
+	container.Adopt(basicElements.NewLabel("Explore a 3D world!", false), false)
+	container.Adopt(game, true)
+	game.Focus()
+	
+	window.OnClose(tomo.Stop)
+	window.Show()
+}