waylogout: added configuration module

[Noodlez1232]

90% of the code is copied over from swaylock so thanks to the creator of that module!

Description

Checklist

• [X] Change is backwards compatible.

• [X] Code formatted with ./format.

• [X] Code tested through nix-shell --pure tests -A run.all or nix develop --ignore-environment .#all using Flakes.

• [X] Test cases updated/added. See example.

• [X] Commit messages are formatted like

  {component}: {description}
  
  {long description}
  

  See CONTRIBUTING for more information and recent commit messages for examples.

• If this PR adds a new module

  • [X] Added myself as module maintainer. See example.

Maintainer CC