feat(scala): m11 pong capstone (model, rules, view, app) with tests

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scala/src/pong/View.scala

@@ -0,0 +1,17 @@
+package snake
+package pong
+
+import PongModel.*
+
+/** m11 pong view: the same Scene shapes as the snake view, so the same drawScene and runtime draw it. */
+object PongView:
+
+  /**
+   * Describe the match as shapes, drawn in order (all text is "#ffffff", align "center"):
+   * background `Rect(0, 0, 640, 400, "#111111")`; the player paddle `Rect(PLAYER_X*8, player*8, 8, 64, "#ffffff")`,
+   * then the cpu paddle the same way at CPU_X; the ball `Rect(x*8, y*8, 8, 8, "#ffeb3b")`;
+   * the score `Text(320, 30, "<player>   <cpu>" (three spaces), size 24)`.
+   * When Over: `Text(320, 200, "You Win!" if the player has more points, else "CPU Wins", size 32)` and
+   * `Text(320, 230, "Press R to restart", size 16)`.
+   */
+  def pongView(state: PongState): Scene = ???