Cannot install foreign library

**Describe the bug**
There is no predicable way to install foreign library components using `cabal-install`. The `install` command only installs executables.

My current workaround is to fall back on the `runhaskell Setup.hs` interface, so I can use the `copy` command.

**To Reproduce**
Steps to reproduce the behavior:

```
# Create a package with only a foreign library called mylib
$ cabal v2-install mylib --installdir=some/directory/
```

**Expected behavior**
Cabal copies the built foreign library to `some/directory`.

**System information**
- macOS 13
- Cabal 3.8.1.0
- GHC 9.4.4

**Additional context**
As far as I can tell, there is no way to use `cabal-install` to reliably copy a built foreign library out of `dist-newstyle` other than writing a custom `Setup.hs` script with a `postBuild` hook. Even then, there is no way to reliably pass the desired installation directory, except, perhaps, via an environment variable.