Obsolete `ResourceManagerWithCultureStringLocalizer` and `WithCulture` interface member

[ryanbrandenburg]

The ResourceManagerWithCultureStringLocalizer and WithCulture interface member are often sources of confusion for users of Localization, especially if they want to create their own IStringLocalizer implementation. These items give the user the impression that we expect an IStringLocalizer instance to be "per-language, per-resource", when actually they should only be "per-resource", with the language searched for determined by the CultureInfo.CurrentUICulture at execution time.

Neither of these has any usage that I was able to find with a cursory search, and it's difficult for me to imagine when they would be the correct option, so let's just get rid of them in 3.0.

[hishamco]

Or we can move WithCulture as extension method as I mentioned here

[hishamco]

@ryanbrandenburg can we mark them as Obsolete in release 2.2 branch and removing them in the master branch?

[ryanbrandenburg]

Yeah, marking them as Obsolete would probably be step one, but this is just a suggestion on my part at this point. We'll have to talk it over with @mkArtakMSFT and probably @DamianEdwards to decide if they want this and what the plan would be first.

[hishamco]

Sound good .. hope you check my earlier points in the issue that I referenced with them too ..

[hishamco]

Another issue in WithCulture is if we passed a null it will create another instance with the same culture!!

[hishamco]

@ryanbrandenburg any updates on this?