bluez: add support for the sixaxis controller

[cdepillabout]

This should add support for the Playstation Dualshock 3 and DualShock 4
controllers.

Motivation for this change

Currently the bluez package does not enable the sixaxis plugin. This sixaxis plugin is needed to support the Playstation Dualshock 3 and DualShock 4 controllers.

This can be easily compiled with the following command if you have this branch checked out:

nix-build -E 'with import ./. { }; bluez.override { enableSixaxis = true; }'

It looks like bluez doesn't have any maintainers, and a lot of people have touched the bluez derivation, so I'm not sure who to ping about reviewing this.

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Assured whether relevant documentation is up to date
• Fits CONTRIBUTING.md.

---

[veprbl]

Honestly, I don't think we need all those options. Arch builds those plugins unconditionally: https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/bluez

[cdepillabout]

It looks like arch builds them unconditionally, but they are only installed if you install the bluez-plugins package:

https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/bluez#n148

Thanks for merging this BTW!