yet another api rework, removal of integer types in public api, optionals at the end, some cleaning

apps/twnlua/data/scripts/game.lua

@@ -4,13 +4,22 @@ offset = { x = 0, y = 0 }
 angle = 0
 
 function game_tick()
-    rectangle {
+    draw.rectangle {
         rect = { x = 0, y = 0, w = 640, h = 360 },
         color = { r = 127, g = 0, b = 127, a = 255 },
     }
 
-    sprite {
-        path = "/assets/title.png",
+    input.action {
+        name = "move_up",
+        control = input.CONTROL_L,
+    }
+
+    if input.action_pressed "move_up" then
+        draw.text { string = "BOO!" }
+    end
+
+    draw.sprite {
+        texture = "/assets/title.png",
         rect = {
             x = 320 - (320 / 2),
             y = 180 - (128 / 2),
@@ -19,7 +28,7 @@ function game_tick()
         },
     }
 
-    text {
+    draw.text {
         string = "IT KEEPS HAPPENING",
         position = offset,
         font = "/fonts/kenney-pixel.ttf",