Games App: Pong, Snake and Tetris

A new App (issue #101) that shows its three Games as icons, as the
Launcher shows Apps, and plays the one chosen. A Game left in the middle
is found again paused; one being played keeps the screen lit. Tetris
plays Korobeiniki on a speaker channel of its own, faster with each
level: 0 switches it, 8 and 9 set its volume, both remembered. The drop
is on 1, away from the arrows. The best of each Game is kept.

Played on the device. The speeds are as tuned there.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0162FokPdvY2KsS4NBfwyWPk

src/ui/icons.h

@@ -8,16 +8,20 @@ namespace roro::icons {
 // One bit a pixel, the leftmost first, a row after another: what Canvas::drawBitmap takes.
 constexpr int kSize = 32;
 
+extern const uint8_t games[128];  // games.png
 extern const uint8_t gemini[128];  // gemini.png
 extern const uint8_t gnss[128];  // gnss.png
 extern const uint8_t irc[128];  // irc.png
 extern const uint8_t lora[128];  // lora.png
 extern const uint8_t notes[128];  // notes.png
+extern const uint8_t pong[128];  // pong.png
 extern const uint8_t settings[128];  // settings.png
 extern const uint8_t shell[128];  // shell.png
+extern const uint8_t snake[128];  // snake.png
 extern const uint8_t ssh[128];  // ssh.png
 extern const uint8_t storage[128];  // storage.png
 extern const uint8_t system[128];  // system.png
+extern const uint8_t tetris[128];  // tetris.png
 extern const uint8_t wifi_tools[128];  // wifi-tools.png
 
 }  // namespace roro::icons