stack install --solver target

[mgsloan]

This issue is documenting a design for an enhancement. Closing issues #1693 and #2039 in favor of this one.

• Implement --no-config or --standalone option.
• Have stack install --solver mean to use stack init --solver logic along with the targets. Also implies --no-config, and causes a --resolver to be chosen. A warning will be issued when this is used on local packages, mentioning that it is ignoring the current project config and creating a temporary project. Should also warn when it isn't used with --copy-bins, and if there are targets that don't have executables, as these both indicate a misunderstanding about how it works.
• Suggest stack install --solver when there is a build plan failure for target hackage packages that contain executable stanzas, as this is the common case that this is intended for.

[snoyberg]

We've removed the solver support in #4670