perf: change structure and simplify

demo/check_attendency.py

@@ -9,9 +9,9 @@ logging.basicConfig(level=logging.INFO)
 async def main() -> None:
     cpf = "00011122233"
     async with PPGEE(user=cpf, password=cpf) as ppgee:
-        frequency_page = await ppgee.frequency()
-        print(frequency_page.history())
-        await frequency_page.confirm()
+        attendency_page = await ppgee.attendency()
+        print(attendency_page.history())
+        await attendency_page.confirm()
         await asyncio.sleep(5)