Make it available to install with Scoop (command-line installer for Windows)

[davidtaim]

As Cartero have a portable version, it would be nice to have it available on Scoop to do the installation.

So I created an issue on Scoop/Extras/Issues and create the manifest required to make it available with this PR.

I have two (not big) issues:

1. Currently when is installed (locally, just with the cartero.json) it does not have the icon because the way that scoop creates the shortcut it uses only the cartero.exe and the name "Cartero", you can provide an icon path but as I know Cartero uses .svg that is loaded with some magic of gtk and its mmap.
2. The manifest have an optional field called "extract_dir" an this is used when the file is being decompressed choose which folder inside the zip should be decompressed, so knowing this, on version 0.1.4 it has a folder called "cartero-win32", so I use that to create the PR, but on version 0.1.3 it does not have that folder, I just can make a new PR updating this, that's not a big issue for me.

So while the PR is getting approved, maybe I can get some ideas to know what could be a better way to "resolve" this issues, because there are not really issues.