compose: have an option to resolve `~` into the host home directory of Lima / Rancher Desktop

### What is the problem you're trying to solve

`nerdctl compose up` via Lima or Rancher Desktop resolves `~` in the compose YAML into the guest home `(/home/foo.linux` or `/root`), not into the host home (`/Users/foo`).

This is not a bug but confusing.

### Describe the solution you'd like

Support a new property like `home = $LIMA_USERHOME` in `nerdctl.toml`:
https://github.com/containerd/nerdctl/blob/master/docs/config.md

Probably this can be applied to expansion of `~/.docker/config.json` too.

### Additional context

_No response_

Start with docs/config.md and trace how nerdctl compose expands `~` in Compose YAML when running through Lima or Rancher Desktop. Determine where a `home = $LIMA_USERHOME` option would be read and whether the same behavior applies to `~/.docker/config.json`; done means the configured host home is used instead of the guest home.

Written by the indexing model from the issue text.