OrchardHelper content APIs should be accessible without namespace

[hishamco]

All IOrchardHelper extension methods are easily accessible without a namespace in RazorPages or MVC views, except Content APIs this PR make them consistent with others

[gvkries]

I agree with this, but it's again a breaking change.

[ns8482e]

Please don't change namespace, instead update module/theme templates to include OrchardCore as global using

[hishamco]

Which module do you mean? But the change is necessary to make things consistent, 3.0.0 is the only way to accept such breaking change

[gvkries]

Moving the helper class out of the module, as done in PR #17414, should be done at the same time.

[hishamco]

Do you mean out of OC.Contents? If yes this mean we should revise the other helpers coz I'm sure that I saw some inside the module projects

If the intend is to avoid module reference once we use them. I might create another PR after to make things consistent