Add maze generation visualization with 2-phase animation

Enhance maze generation animation system with visual feedback during algorithm execution and a two-phase rendering approach:

- Phase 1: Preview mode displays simple blocks while algorithms run, with real-time feedback for path checking (valid/invalid/evaluating states)
- Phase 2: Sweep 3D modular pieces into place with pop-in animations

Updates:
- New MazeCellHighlight states (EvaluatingValid, EvaluatingInvalid) for algorithm feedback
- Modified all maze algorithms (DFS, Kruskal's, Prim's) to emit visual feedback when checking adjacent cells
- New animation components: HighlightLinger (self-destruct highlights) and PopInAnimation (juicy pop-in effect)
- Refactored MazeReworkSpawner to support preview prefabs and track spawned object state
- New prefabs: Stair room and MazeVisualize variants
- Added stepDelay and isPreviewMode controls to MazeAnimator for flexible pacing
- Reduced default maze size and adjusted material colors for testing

Assets/Presets/MazeRework.asset

@@ -13,8 +13,8 @@ MonoBehaviour:
   m_Name: MazeRework
   m_EditorClassIdentifier: Assembly-CSharp::Baba_yaga.GameSetup.MazeRework.MazeReworkConfig
   algorithm: 3
-  width: 21
-  depth: 21
+  width: 10
+  depth: 10
   useRandomSeed: 1
   seed: 1337
   startLocation: {x: 1, y: 1}
@@ -22,5 +22,5 @@ MonoBehaviour:
   roomCount: 378
   minRoomSize: {x: 3, y: 3}
   maxRoomSize: {x: 5, y: 5}
-  extraRoomDoorChance: 0.3
+  extraRoomDoorChance: 1
   loopChance: 0.1