feat: add (incomplete) nix flake

dave.py isn't packaged yet. Will try to do this myself but dealing with
vcpkg is a bit annoying.

errornocord/events.py

@@ -0,0 +1,67 @@
+import asyncio
+import threading
+from logging import debug, info, warning
+
+from . import commands, core, fun, tasks
+from .state import client
+
+
+def prepare():
+    threading.Thread(
+        name="cleanup",
+        target=asyncio.run_coroutine_threadsafe,
+        args=(
+            tasks.cleanup(),
+            client.loop,
+        ),
+    ).start()
+
+
+async def on_bulk_message_delete(messages):
+    commands.voice.remove_queued(messages)
+
+
+async def on_message(message):
+    await core.on_message(message)
+    await fun.on_message(message)
+
+
+async def on_message_delete(message):
+    commands.voice.remove_queued([message])
+
+
+async def on_message_edit(before, after):
+    if before.content == after.content:
+        return
+
+    await core.on_message(after, edited=True)
+
+
+async def on_voice_state_update(member, before, after):
+    await core.on_voice_state_update(member, before, after)
+
+
+async def on_ready():
+    info(f"logged in as {client.user}")
+
+
+async def on_connect():
+    debug("connected to the gateway!")
+
+
+async def on_disconnect():
+    warning("disconnected from the gateway!")
+
+
+for event_type, handlers in client.get_listeners().items():
+    for handler in handlers:
+        client.remove_listener(handler, event_type)
+
+client.add_listener(on_bulk_message_delete, "on_bulk_message_delete")
+client.add_listener(on_connect, "on_connect")
+client.add_listener(on_disconnect, "on_disconnect")
+client.add_listener(on_message, "on_message")
+client.add_listener(on_message_delete, "on_message_delete")
+client.add_listener(on_message_edit, "on_message_edit")
+client.add_listener(on_ready, "on_ready")
+client.add_listener(on_voice_state_update, "on_voice_state_update")