Package lychee to avoid specifying location when running docfx-utils

[cjsha]

Also, is it possible to couple the local lychee linkcheck action with the remote lychee linkcheck action (the difference being that the local linkcheck excludes an additional URL glob to avoid the errors described in #74).

[cjsha]

could do something similar to what's done here
https://github.com/open-ephys/bonsai-onix1/blob/b9bdc3c0bb340843ff4288b6145308176307d81e/.bonsai/Setup.ps1
and make the appropriate changes in the gitignore.