Mypy can't type check pycord when namespace_packages are enabled

[MebinAbraham]

Summary

Mypy errors when using pycord with namespace_packages flag enabled

Reproduction Steps

Run mypy against a simple pycord setup.

An example set up is as follows:

my-repo/
├─ my_bot/
│  ├─ bot.py
.mypy.ini

Run mypy via: mypy my_bot/

Mypy config:

[mypy]
namespace_packages = True
ignore_missing_imports = True

Minimal Reproducible Code

`from discord import ApplicationCommand` in bot.py

Expected Results

Type checking works as expected with namespace_packages enabled

Actual Results

Type checking errors with:

virtual-env-path/lib/python3.9/site-packages/discord/commands/__init__.py: error: Source file found twice under different module names: "discord.commands.__init__" and "discord.commands"
Found 1 error in 1 file (errors prevented further checking)

Intents

N/A

System Information

- Python v3.9.5-final
- py-cord v2.0.0-beta
    - py-cord pkg_resources: v2.0.0b3
- aiohttp v3.8.1
- system info: Darwin 20.6.0 Darwin Kernel Version 20.6.0: Tue Oct 12 18:33:42 PDT 2021; root:xnu-7195.141.8~1/RELEASE_X86_64

Checklist

• I have searched the open issues for duplicates.
• I have shown the entire traceback, if possible.
• I have removed my token from display, if visible.

Additional Context

Mypy won't error is namespace_packages is False but then it cannot infer the types properly and will result in errors such as:

app/bot.py:1: error: Module "discord" has no attribute "ApplicationCommand"; maybe "ApplicationCommandMixin"?

This issue is also persistent in nextcord however, nextcord is available under discord and nextcord so in nextcord this issue is fixed by changing the import to from nextcord import ApplicationCommand. Pycord doesn't expose the package as pycord. Any reason for this?.