feat: memory alerts with top-memory process, top offender in alerts, scheduled status reports

bot.py

@@ -6,7 +6,7 @@ from pathlib import Path
 
 import monitor
 import templates
-from alerter import Alerter
+from alerter import Alerter, Reporter
 from onebot import OneBotServer
 from updater import Updater
 
@@ -205,6 +205,8 @@ class Bot:
         await self.ob.start(self.on_event)
         alerter = Alerter(self.ob, self.cfg.get("alert", {}))
         alerter.start()
+        reporter = Reporter(self.ob, self.cfg.get("report", {}))
+        reporter.start()
         updater = Updater(self.ob, self.cfg.get("update", {}))
         if self.cfg.get("update", {}).get("enabled", False):
             updater.start()
@@ -217,6 +219,7 @@ class Bot:
         finally:
             watcher.cancel()
             await updater.stop()
+            await reporter.stop()
             await alerter.stop()
             await self.ob.stop()