Implement Scoop install.

[adriens]

First scoop attempt see #84

[cppforlife]

cc @DennisDenuto since you are exploring goreleaser integrations.

[DennisDenuto]

@adriens I'm not super knowledgable around the windows ecosystem wrt package managers... but...

Can we use scoop instead of chocolatey to distribute our binary files to windows folk?

goreleaser does support generating scoop files and would 'plug-in' smoothly to some of our other tools release process which i'm trying to automate (some of the work is still in draft).

for e.g.

if we were to use goreleaser to generate the scoop files, we could do something similar to this: carvel-dev/imgpkg#180 (except replace the word homebrew with scoop)