Make it easier and more consistent to package for distros

[alerque]

The all_features set has, well, all features. That's fine for end users that are using cargo install or building directly from a Git clone, but that set of features includes one thing than is almost never appropriate for distro packagers to use: the self_update feature. Because the resulting binary in installed somewhere that the system package manager is tracking, it should never get messed with by a self-* feature. This is a common issue on many projects that enable this by default. If upstream projects don't include a way to disable it out of the box distro often have to patch it out themselves.

In the case of this project it can be avoided by manually assembling a long list of features: --features='feature_capable,apply,fetch,foreach,generate,geocode,luau,polars,python,to,to_parquet'.
This is somewhat combersome and error prone, and also subject to change. The last release for example removed the generate feature. That at least threw an error on build so I noticed it when updating the package, but it would be easy for a new feature to get added and have distro packagers miss it.

The arrangement in this PR adds a new feature set for the convenience of distro packagers or others distributing a binary through a channel other than "self". This should make it easier to maintain by staying up to date upstream and giving distros a single flag to set that works for most cases.

[jqnatividad]

Thanks @alerque ! Out of curiosity, are you currently packaging qsv in a distro? Which one?

[alerque]

Yes, I package it for Arch Linux. It is currently in the AUR and the prebuilt user repository I host, but I'll probably move it to official repositories soon. I also know Hombrew packages this, and now that it does I can start depending on it for some production work that needs to have access to it. This should benefit that build too. I also plan on submitting it to Nix. I see others have packaged it for Void Linux and MacPorts as well. This should be relevant in all of those cases as well as other potential distros.

[alerque]

https://repology.org/project/qsv/versions