Move operations not requiring numerical properties to BasicOps

[8000thCube]

full, full_like, equal_elem, not_equal_elem, mask_where, mask_fill, gather, scatter, select, and select_assign have nothing to do with numerical properties and should be moved, allowing their use on Bool Tensors. This could be useful in situations like making complex masks. zeros and ones could also be moved, and correspond to false and true in bool case.

[antimora]

Linking the related ticket: #1535

Mainly bool elem type was not supported back then. I am not sure if we still have this blocker. @laggui maybe can tell us.

[laggui]

Mainly bool elem type was not supported back then. I am not sure if we still have this blocker.

Bool is implemented and the backend also has an associative type for BoolElem: Element, so should be fine on that front.