Refactor Culture and supported_cultures

[sebastienros]

In this PR #16208

1. Culture was introduced to represent the selected culture for the context. We should just be able to return a new ObjectValue with the current culture in it and not have to proxy every property since CultureInfo is already registered.
2. supported_cultures should not be a filter, because it's not using the input. We could pass anything to it and it would still work. I suggest we register a FluidValue like SupportedCultures so we can write for cultures in SupportedCultures.
3. We should find a better way or improve Fluid to be able to register values and resolve its properties with lambdas. Instead of creating a XXXFluidAccessor then register it, like Environment, Culture, ...

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[sebastienros]

@hishamco Wondering if it would make sense to expose SupportedCultures like Culture.SupportedCultures instead. Would it feel more natural to have it under a common thing.

And another comment about something that might not work with the recent PR we merged, we should be able to pipeline SupportedCultures (in any form we decide to expose it) with the properties on a CultureInfo like Name, Dir, ... So we need to add a converter from CultureInfo to CultureValue, but one that saves its culture as a state, so what you had done initially ...

[hishamco]

@hishamco Wondering if it would make sense to expose SupportedCultures like Culture.SupportedCultures instead. Would it feel more natural to have it under a common thing.

Could be, but it might be confusing to have supported cultures inside culture, what about locale.Culture, locale.SupportedCultures?

So we need to add a converter from CultureInfo to CultureValue, but one that saves its culture as a state, so what you had done initially ...

Let me start a new PR and ping you then

[hishamco]

So we need to add a converter from CultureInfo to CultureValue

@sebastienros I'm not sure if it's doable now after you removed the CultureInfo from the CultureValue constructor

[sebastienros]

Almost done on my side

[hishamco]

I will wait for your PR, coz I already working on a new branch :) I will save the time and wait until you push your PR