Create README.md

Author: SinlessDevil

README.md

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+# 💾 Save System Tool for Unity
+
+A modular, extensible and editor-friendly Save System for Unity, supporting multiple serialization formats (PlayerPrefs, JSON, XML), with visual debugging and management tools built using Odin Inspector.
+
+---
+
+## ✨ Features
+
+- 🔁 **Strategy Pattern**: Plug-and-play architecture with interchangeable save methods
+- 💾 **Supported Formats**:
+  - PlayerPrefs (with Odin serialization)
+  - JSON file
+  - XML file
+- 🧠 **Editor Tool**:
+  - Odin Editor Window for previewing saved data
+  - Visual decoding for PlayerPrefs, JSON, and XML
+  - Deletion of individual entries
+  - Auto refresh on changes
+  - Clear indication of save locations per method
+- 🧱 **Extensible Architecture**:
+  - Easy to add encryption, cloud saving, or custom file handling
+  - Facade over save methods to switch runtime behavior
+
+---
+
+## 📁 File Formats
+
+### 🧠 PlayerPrefs
+- Stored in system registry (Windows) or plist (macOS)
+- Serialized via Odin using Base64 + JSON
+
+### 📄 JSON
+- Located at:
+  ```
+  Application.persistentDataPath/player_data.json
+  ```
+- Fully human-readable
+
+### 📂 XML
+- Located at:
+  ```
+  Application.persistentDataPath/player_data.xml
+  ```
+- Readable and compatible with standard tools
+
+---
+
+## 🛠 Tech Stack
+- Unity 2022+
+- Odin Inspector
+- Sirenix Serialization
+
+---
+
+## 🧪 Example Data Structure
+
+```csharp
+[Serializable]
+public class PlayerData
+{
+    public string PlayerName;
+    public int Level;
+    public float Health;
+    public Vector3 Position;
+    public bool HasPremium;
+    public GameSettings Settings;
+    public InventoryData Inventory;
+    public QuestProgress[] Quests;
+}
+```
+
+---
+
+## 📷 Screenshots
+
+> _Coming soon..._
+
+---
+
+## 🧩 Usage
+
+### Save:
+```csharp
+saveLoadFacade.Save(SaveMethod.Json, playerData);
+```
+
+### Load:
+```csharp
+PlayerData loaded = saveLoadFacade.Load(SaveMethod.PlayerPrefs);
+```
+
+
+---
+
+## 📌 Related Projects
+- [Grid Level Editor](https://github.com/SinlessDevil/Grid_Level_Editor)
+- [Language Change Tools](https://github.com/SinlessDevil/Language_Change_Tools)
+- [Inventory Tetris](https://github.com/SinlessDevil/Inventory_Tetris)
+