Added context shortcut to get the lavalink player

context.py

@@ -1,7 +1,15 @@
 from aioredis.client import Redis
 from discord.ext import commands
+from discord.ext.commands.errors import CommandInvokeError
+from lavalink.models import DefaultPlayer
 
 
 class CustomContext(commands.Context):
     def get_redis(self) -> Redis:
         return self.bot._redis_client
+
+    def get_player(self) -> DefaultPlayer:
+        if hasattr(self.bot, "lavalink"):
+            return self.bot.lavalink.player_manager.get(self.guild.id)
+
+        raise CommandInvokeError("Lavalink is still starting up.")