Keyutils support

[unkcpz]

Redirect from hwchen/keyring-rs#234

We have some use cases that we want to use keyring in linux without linux desktop in the first place. It then require our users to install the dbus properly. To solve the issue, I wrap the rust implementation which support keyutils with python bindings into https://github.com/unkcpz/keyringrs.

I guess to make it works with keyutils, it requires to directly interact with keyutils API? There are some python libraries I found which tries to support it but is not actively maintained:

• https://github.com/lilatomic/turkeyutils
• https://github.com/sassoftware/python-keyutils

There is one that is quite new which is also a rust wrapper but for keyutils directly:

• https://github.com/thorgate/python-linux-keyutils