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/state.py

@@ -0,0 +1,20 @@
+import time
+
+import disnake
+
+from .utils import LimitedSizeDict
+
+intents = disnake.Intents.default()
+intents.message_content = True
+intents.members = True
+client = disnake.Client(intents=intents)
+
+command_cooldowns = LimitedSizeDict()
+command_locks = LimitedSizeDict()
+idle_tracker = {"is_idle": False, "last_used": time.time()}
+kill = {"transcript": False}
+message_responses = LimitedSizeDict()
+players = {}
+sponsorblock_cache = LimitedSizeDict()
+start_time = time.time()
+trusted_users = []