Rename package from libstone to libstone-go

[livingsilver94]

@der-eismann you were right, it's better to reflect the URL in the package name, otherwise pkg.go.dev won't find our library.

Furthermore, Go removes the go- prefix from package names, and the -go suffix, so it's all good.

[der-eismann]

Maybe we should prefix it instead then? Works for this hashicorp project as well.

[livingsilver94]

See my edit. -go suffix is accepted as well. After all, our own code calls libstone.*. See https://github.com/serpent-os/libstone-go/blob/reponame-test/internal/cli/inspect.go#L26 as an example

[der-eismann]

Ah that's what you mean, I thought you were talking about pkg.go.dev, sorry. Fine for me!

[livingsilver94]

I was talking about both actually :) it looks like I'm making a mess at explaining myself, so here's a recap

1. pkg.go.dev expect the module name to reflect the URL, so we must name the package github.com/serpent-os/libstone-go
2. Go removes go- prefix and -go suffix in code, so that we can just write libstone.* in code without that annoying dash and the redundant "go" string. We are writing Go, we don't need to remind ourselves it's Go :)