support @opentofu(required_version)

[kvendingoldo]

Is your feature request related to a problem? Please describe.
We have to handle the case described in opentofu/opentofu#1005 after the final discussion from OpenTofu maintainers side.

[dvaumoron]

We should think to handle .tofu files as well

[kvendingoldo]

You're right, but we need to wait until the discussion in opentofu community will be completed and converted to a standard.

[dvaumoron]

.tofu file are in 1.8 alpha, i will do the change soon in order to be ready

[kvendingoldo]

Yep, wanted to highlight it either :)