Add netbird-bin package

Only contains the binary release for amd64 atm. Have not had time to
figure out the build process / add more arches.

Will also probably be a little buggy still. There's a system service
included which needs to run for netbird to work.

Setup is a tiny bit cumbersome in that you have to enable the service
_first_ (which will complain about no auth found) and then manually run
`netbird up` with your pre-shared key or sso or whatever method you
choose to authenticate.

README.md

@@ -32,12 +32,13 @@ Then all packages herein can be installed.
 
 - [x] bemoji
 - [x] ripgrep-all
-- [x] filtile (/src instead of bin)
-- [x] dotter (/src instead of bin)
-- [x] git-bug (/src)
+- [x] filtile (bin build only)
+- [x] dotter
+- [x] git-bug
 - [ ] bugwarrior - only in pypi for now
 - [ ] viddy / hwatch
-- [ ] netbird / protonvpn / piactl
+- [x] netbird (bin build only. After install, enable service, then run 'netbird up')
+- [ ] protonvpn / piactl
   - <https://github.com/pia-foss/desktop/issues/59>
 - [ ] taskopen
 - [ ] dstask