[Enhance] Add background task

- Add background task module for log database
- Update some data for Arcaea v4.4.4

latest version/core/bgtask.py

@@ -0,0 +1,40 @@
+from atexit import register
+from concurrent.futures import ThreadPoolExecutor
+
+from .constant import Constant
+from .sql import Connect
+
+
+class BGTask:
+    executor = ThreadPoolExecutor(max_workers=1)
+
+    def __init__(self, func, *args, **kwargs):
+        self.future = self.executor.submit(func, *args, **kwargs)
+
+    def result(self):
+        return self.future.result()
+
+    def cancel(self) -> bool:
+        return self.future.cancel()
+
+    def done(self) -> bool:
+        return self.future.done()
+
+    @staticmethod
+    def shutdown(wait: bool = True):
+        BGTask.executor.shutdown(wait)
+
+
+@register
+def atexit():
+    BGTask.shutdown()
+
+
+def logdb_execute_func(sql, *args, **kwargs):
+    with Connect(Constant.SQLITE_LOG_DATABASE_PATH) as c:
+        c.execute(sql, *args, **kwargs)
+
+
+def logdb_execute(sql: str, *args, **kwargs):
+    '''异步执行SQL，日志库写入，注意不会直接返回结果'''
+    return BGTask(logdb_execute_func, sql, *args, **kwargs)