[pkg] keep backwards-compatibility for helper location

I am honestly amazed at all the things that went wrong with the commit
a0f8afb9 by sam:

- attempted to fix something that was not broken
- bumped the build dependency from go 1.14 to go 1.17, even when he had
  been warned that we try to keep backward compatibility to be able to
  build the client in standard or limited enviroments.
- if you (meaning, any future maintainer) are tempted to bump the go
  version we depend on again, please make sure that the snap, win and
  mac build procedures are updated accordingly.
- removing one extra dependency is ok, but maintaining compabilitiy for
  builds is even more importan-ter.
- you cannot just change paths of a top-level folder without grepping
  for the use of those paths. period. I see you fixed linux in
  5ed27792f38e974922a8u, but branding/ scripts still depend on that.
- if you are going to do this, please open a review process and wait for
  others to chime in.
- if you are not sure, just fucking ask.

(I better won't mention how many hours were invoiced for this commit,
because that's fucking unprofessional, lol).

on the positive side, i've learned a few things that can go to a style
guide in the near future. that's something, I guess :)