Refactoring of the interaction system and preliminary integration of save/load functionality across the game. (#44)

### Interactables Architecture Refactor
- Converted composition to inheritance, moved from component-based to class-based interactables. No more requirement for chain of "Interactable -> Item" etc.
- Created `InteractableBase` abstract base class with common functionality that replaces the old component
- Specialized child classes: `Pickup`, `ItemSlot`, `LevelSwitch`, `MinigameSwitch`, `CombinationItem`, `OneClickInteraction` are now children classes
- Light updates to the interactable inspector, moved some things arround, added collapsible inspector sections in the  UI for better editor experience

### State Machine Integration
- Custom `AppleMachine` inheritong from Pixelplacement's StateMachine which implements our own interface for saving, easy place for future improvements
- Replaced all previous StateMachines by `AppleMachine`
- Custom `AppleState`  extends from default `State`. Added serialization, split state logic into "EnterState", "RestoreState", "ExitState" allowing for separate logic when triggering in-game vs loading game
- Restores directly to target state without triggering transitional logic
- Migration tool converts existing instances

### Prefab Organization
- Saved changes from scenes into prefabs
- Cleaned up duplicated components, confusing prefabs hierarchies
- Created prefab variants where possible
- Consolidated Environment prefabs and moved them out of Placeholders subfolder into main Environment folder
- Organized item prefabs from PrefabsPLACEHOLDER into proper Items folder
- Updated prefab references - All scene references updated to new locations
- Removed placeholder files from Characters, Levels, UI, and Minigames folders

### Scene Updates
- Quarry scene with major updates
- Saved multiple working versions (Quarry, Quarry_Fixed, Quarry_OLD)
- Added proper lighting data
- Updated all interactable components to new architecture

### Minor editor tools
- New tool for testing cards from an editor window (no in-scene object required)
- Updated Interactable Inspector
- New debug option to opt in-and-out of the save/load system
- Tooling for easier migration

Co-authored-by: Michal Pikulski <michal.a.pikulski@gmail.com>
Reviewed-on: #44

Assets/Prefabs/Puzzles/AnneLise/AnneLiseBush_SoundBird.prefab

@@ -0,0 +1,63 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!1001 &8113932533366191520
+PrefabInstance:
+  m_ObjectHideFlags: 0
+  serializedVersion: 2
+  m_Modification:
+    serializedVersion: 3
+    m_TransformParent: {fileID: 0}
+    m_Modifications:
+    - target: {fileID: 1193493154550576580, guid: 9b2926886934b554f9a1727331d34787, type: 3}
+      propertyPath: reactionClipToPlay
+      value: 
+      objectReference: {fileID: 8300000, guid: 0ca909ee49d83134d9040e527ba94af4, type: 3}
+    - target: {fileID: 5943355783477523754, guid: 9b2926886934b554f9a1727331d34787, type: 3}
+      propertyPath: m_Name
+      value: AnneLiseBush_SoundBird
+      objectReference: {fileID: 0}
+    - target: {fileID: 8259693476957892150, guid: 9b2926886934b554f9a1727331d34787, type: 3}
+      propertyPath: m_LocalPosition.x
+      value: -71.04
+      objectReference: {fileID: 0}
+    - target: {fileID: 8259693476957892150, guid: 9b2926886934b554f9a1727331d34787, type: 3}
+      propertyPath: m_LocalPosition.y
+      value: 67.12
+      objectReference: {fileID: 0}
+    - target: {fileID: 8259693476957892150, guid: 9b2926886934b554f9a1727331d34787, type: 3}
+      propertyPath: m_LocalPosition.z
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8259693476957892150, guid: 9b2926886934b554f9a1727331d34787, type: 3}
+      propertyPath: m_LocalRotation.w
+      value: 1
+      objectReference: {fileID: 0}
+    - target: {fileID: 8259693476957892150, guid: 9b2926886934b554f9a1727331d34787, type: 3}
+      propertyPath: m_LocalRotation.x
+      value: -0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8259693476957892150, guid: 9b2926886934b554f9a1727331d34787, type: 3}
+      propertyPath: m_LocalRotation.y
+      value: -0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8259693476957892150, guid: 9b2926886934b554f9a1727331d34787, type: 3}
+      propertyPath: m_LocalRotation.z
+      value: -0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8259693476957892150, guid: 9b2926886934b554f9a1727331d34787, type: 3}
+      propertyPath: m_LocalEulerAnglesHint.x
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8259693476957892150, guid: 9b2926886934b554f9a1727331d34787, type: 3}
+      propertyPath: m_LocalEulerAnglesHint.y
+      value: 0
+      objectReference: {fileID: 0}
+    - target: {fileID: 8259693476957892150, guid: 9b2926886934b554f9a1727331d34787, type: 3}
+      propertyPath: m_LocalEulerAnglesHint.z
+      value: 0
+      objectReference: {fileID: 0}
+    m_RemovedComponents: []
+    m_RemovedGameObjects: []
+    m_AddedGameObjects: []
+    m_AddedComponents: []
+  m_SourcePrefab: {fileID: 100100000, guid: 9b2926886934b554f9a1727331d34787, type: 3}