[Game] Animate Arrows (#7099)

* Add an arrow draw animation setting

- New arrowDrawAnimation cards-display setting, default on
- The arrow draw animation checkbox joins the animation settings group
- Visual Deck Storage selection animation checkbox moves next to the
  other animation checkboxes, and the enable/disable-all buttons now
  cover it and the arrow animation

Took 2 minutes

Took 21 minutes

Took 7 minutes


Took 11 minutes

Took 20 seconds

* Animate arrows drawing from start to target

- The arrow stroke reveals itself along the arc with an eased timing,
  followed by a short light sheen that sweeps down the shaft
- The arrow head pops in once the reveal reaches it, then the whole
  arrow fades from its initial glow
- Decay is driven by GameScene's shared animation timer through the
  IAnimatedItem interface (QElapsedTimer based), respecting the
  arrowDrawAnimation setting
- GameScene adds the arrow item to the scene before starting its
  animation so the item is registered against a valid scene

Took 6 minutes


Took 1 minute

* Defer animation start so arrows don't start halfway materialized

Took 13 minutes

* Don't draw tip/shaft outline

Took 12 minutes

---------

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

tests/settings/settings_defaults_test.cpp

@@ -476,6 +476,12 @@ TEST_F(SettingsDefaultsTest, CardsDisplay_SampleHandSize_Default)
     ASSERT_EQ(s.getSampleHandSize(), 7);
 }
 
+TEST_F(SettingsDefaultsTest, CardsDisplay_ArrowDrawAnimation_Default)
+{
+    CardsDisplaySettings s(settingsPath, nullptr);
+    ASSERT_EQ(s.getArrowDrawAnimation(), true);
+}
+
 // --- VisualDeckStorageSettings ---
 
 TEST_F(SettingsDefaultsTest, VisualDeckStorage_SortingOrder_Default)