related to
- https://github.com/nushell/nupm/pull/50
## description
`nu-scripts` was not really a package but rather a set of two module
packages.
this feature has been removed from Nupm in
https://github.com/nushell/nupm/pull/50 and this PR fixes the
`nu-scripts` packages.
> **Note**
> the files in `nu-hooks/` have been moved to `nu-hooks/nu-hooks/` to
fit into the current model of Nupm
this PR does not change anything from the user point of view, apart from
the install that goes from
```nushell
nupm install --path --force .
```
to
```nushell
for pkg in (ls **/package.nuon | get name | path dirname) {
nupm install --force --path $pkg
}
```
