deduction guides for std::ranges::transform_view

Since C++20

The deduction guide is provided for std::ranges::transform_view to allow deduction from range and transformation function.

# Declarations

template< class R, class F >
transform_view( R&&, F ) -> transform_view<views::all_t<R>, F>;

(since C++20)

# Example

This section is incompleteReason: no example