decoupled lavalink creation from cogs.music

context.py

@@ -8,16 +8,20 @@ from lavalink.models import DefaultPlayer
 
 if TYPE_CHECKING:
     from bot import TuneBot
+    from utils.classes import BaseCog
 
 
 class CustomContext(commands.Context):
+    bot: "TuneBot"
+    cog: "BaseCog"
+
     @property
     def redis(self) -> Redis:
         return self.bot._redis_client
 
     @property
     def player(self) -> DefaultPlayer:
-        if hasattr(self.bot, "lavalink"):
+        if self.cog.is_lavalink_ready():
             return self.bot.lavalink.player_manager.get(self.guild.id)
 
         raise CommandInvokeError("Lavalink is still starting up.")