rewrite: Update meta.

bot/meta/LionCog.py

@@ -2,4 +2,12 @@ from discord.ext.commands import Cog
 
 
 class LionCog(Cog):
-    ...
+    # A set of other cogs that this cog depends on
+    depends_on: set['LionCog'] = set()
+
+    async def _inject(self, bot, *args, **kwargs):
+        if self.depends_on:
+            not_found = {cogname for cogname in self.depends_on if not bot.get_cog(cogname)}
+            raise ValueError(f"Could not load cog '{self.__class__.__name__}', dependencies missing: {not_found}")
+
+        return await super()._inject(bot, *args, *kwargs)