Support frozen install of only production dependencies

[BorePlusPlus]

Clear and concise description of the problem

As mentioned in the additional context section of #250, it is useful to be able to install only production dependencies (by passing -P flag) while adhering to the frozen install semantics.
This allows for building releases with just production dependencies while ensuring consistent versions of dependencies.

Suggested solution

Allow passing -P parameter when calling nci or ni --frozen.
I will prepare a PR for it.

Alternative

I'm not quite sure - possibly a separate command (e.g. ncip) that encapsulates it all? The benefit would be tighter control over input arguments. The proposed approach allows for the passing of any additional arguments to nci or ni --frozen, not just the -P.

Additional context

Requires a syncing release of antfu-collective/package-manager-detector#40, which enables arguments to be passed to the frozen command in the first place.

I possibly find it a bit too amusing that the combination of flags --frozen and -P in ni --frozen -P reads as frozen pea 🤭

Validations

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