Port the trainer card and the play time

The player's name in the start menu opens TrainerCard: page 1 with the
name, ID, money, Pokédex count and play time, page 2 with the Johto
leaders and the badges owned, turned and closed with the original
buttons. The card picture, leader faces and animated badges come from the
ROM with _CGB_TrainerCard's palettes. GameTimer now counts the play time
from the end of the introduction, capped at 999:59:59, and saves keep it.

Closes #23

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

tests/world-driver.ts

@@ -132,3 +132,10 @@ export function walkTo(
   }
   throw new Error(`Could not reach ${targetX},${targetY}`);
 }
+
+/** A save without the play time, which keeps counting while refused or
+ * rolled-back actions leave everything else unchanged. */
+export function withoutPlayTime<T extends { gameTime?: unknown }>(save: T) {
+  const { gameTime: _, ...rest } = save;
+  return rest;
+}