Support eval (snekbox) file system and attachment display

bot/constants.py

@@ -584,6 +584,7 @@ class _Emojis(EnvConfig):
     defcon_update = "<:defconsettingsupdated:470326274082996224>"  # noqa: E704
 
     failmail = "<:failmail:633660039931887616>"
+    failed_file = "<:failed_file:1073298441968562226>"
 
     incident_actioned = "<:incident_actioned:714221559279255583>"
     incident_investigating = "<:incident_investigating:714224190928191551>"

bot/exts/utils/snekbox/__init__.py

@@ -0,0 +1,12 @@
+from bot.bot import Bot
+from bot.exts.utils.snekbox._cog import CodeblockConverter, Snekbox
+from bot.exts.utils.snekbox._eval import EvalJob, EvalResult
+
+__all__ = ("CodeblockConverter", "Snekbox", "EvalJob", "EvalResult")
+
+
+async def setup(bot: Bot) -> None:
+    """Load the Snekbox cog."""
+    # Defer import to reduce side effects from importing the codeblock package.
+    from bot.exts.utils.snekbox._cog import Snekbox
+    await bot.add_cog(Snekbox(bot))