架构修改，删除Edge浏览器支持，配置可以自己保存

common/__init__.py

@@ -0,0 +1 @@
+from .singleton import Singleton

common/items/__init__.py

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+from .tab_info import TabInfo

common/items/tab_info.py

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+class TabInfo(object):
+    TAB_TYPE_OTHER = "other"
+    TAB_TYPE_USER = "user"
+    TAB_TYPE_LIVE = "live"
+
+    def __init__(self):
+        self.tab_handler: str = ""
+        """WebDriver中，该标签的句柄ID"""
+        self.url: str = ""
+        """标签地址"""
+        self.tab_type: str = self.TAB_TYPE_OTHER
+        """标签类型，展示用"""
+        self.tab_keep: bool = False
+        """关闭标签时，避免被误关"""

common/singleton.py

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+class Singleton(type):
+    """
+    单例模式（以metaclass方式实现）
+    """
+    _instances = {}
+
+    def __call__(cls, *args, **kwargs):
+        if cls not in cls._instances:
+            cls._instances[cls] = super().__call__(*args, **kwargs)
+        return cls._instances[cls]