feat: 添加超星学习通自动评教脚本及配置文件

实现超星学习通自动评教功能，支持账号密码登录和二维码登录
添加配置文件模板、依赖文件及gitignore配置

data/config.example.py

@@ -0,0 +1,34 @@
+import json
+import os
+import time
+
+CONFIG_FILE = os.path.join(os.path.dirname(__file__), "config.json")
+
+USERNAME = "your_username"  # 替换为你的学习通用户名
+PASSWORD = "your_password"  # 替换为你的学习通密码
+QR_LOGIN = False  # 设为 True 启用二维码登录（优先级高于账号密码）
+
+
+def save_cookies(cookies_dict: dict):
+    data = {
+        "cookies": cookies_dict,
+        "saved_at": int(time.time()),
+    }
+    with open(CONFIG_FILE, "w", encoding="utf-8") as f:
+        json.dump(data, f, ensure_ascii=False, indent=2)
+
+
+def load_cookies() -> dict | None:
+    if not os.path.exists(CONFIG_FILE):
+        return None
+    try:
+        with open(CONFIG_FILE, "r", encoding="utf-8") as f:
+            data = json.load(f)
+        return data.get("cookies")
+    except (json.JSONDecodeError, IOError):
+        return None
+
+
+def clear_cookies():
+    if os.path.exists(CONFIG_FILE):
+        os.remove(CONFIG_FILE)