Publish fluxctl to scoop for windows

[gldraphael]

Describe the feature
Publish fluxctl to a public scoop bucket. Preferably main or extras.

What would the new user story look like on windows using scoop?

scoop install fluxctl

Expected behavior
Scoop is installed for the current user.

---

Related: #1363 on adding fluxctl to chocolatey. (If chocolatey is APT, scoop is homebrew. Kind of.)

For the timebeing, fluxctl can be manually installed using scoop by:

1. Creating a fluxctl.json app manifest similar to:

   { 
       "version": "1.14.2", 
       "url": "https://github.com/fluxcd/flux/releases/download/1.14.2/fluxctl_windows_amd64#/fluxctl.exe", 
       "bin": "fluxctl.exe" 
   }

2. And running:

   scoop install .\fluxctl.json

[squaremo]

From the look of it, this would help Windows users out a lot 👍
We may not get to this in the near term, though.

[gldraphael]

Meanwhile I'll be maintaining fluxctl as a scoop package here: https://github.com/gldraphael/scoop-bucket

[gldraphael]

This ended up in the official scoop bucket.
So closing this.

https://github.com/ScoopInstaller/Main/blob/master/bucket/fluxctl.json