setup: Vendor asyncudp

[achimnol]

• First implementation.
• Release job.
• Version 0.2.0.
• Fix typos.
• Fix examples.
• version in init.
• Documentation.
• Examples in documentation.
• Documentation.
• Version 0.4.0.
• Remove pip update from github actions as nothing is installed.
• Cleanup.
• Documentation.
• gitignore: add pyenv version file
• add async context to close socket
• getsockname().
• Raise an exception if the connection is lost.
• Ignore error_received.
• Fix send error.
• Documentation.
• add queue_max_size parameter for socket write opertaions
• Refactor packets queue max size.
• ENH: add reuse_port option in create_socket function
• Test raises without reuse_port.
• CI.
• README.
• setup: Include the vendored asyncudp in our build chain

[cla-assistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 4 committers have signed the CLA.

✅ achimnol
❌ pohmelie
❌ eerimoq
❌ ninousf
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[cla-assistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 4 committers have signed the CLA.

✅ achimnol
❌ pohmelie
❌ eerimoq
❌ ninousf
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[achimnol]

Uh... we need to squash the subtree...

[achimnol]

Recreating the PR.