Add `--force` option

[asgrim]

The design doc specifies a --force option to install a requested version even if we don't think it is compatible.

See: https://github.com/ThePHPF/pie-design?tab=readme-ov-file#--force

[asgrim]

Once #48 is done, in theory I think this is just applying the same as --ignore-platform-reqs (or some variation thereof)

[Bellangelo]

@asgrim Not sure if the issue is "ready" but I noticed that the #48 is closed so I opened a PR for the --force option #165