deduction guides for std::ranges::join_with_view

From cppreference.com
Ranges library
Range adaptors
Defined in header <ranges>
template < class R, class P >
join_with_view ( R && , P && ) - > join_with_view < views:: all_t < R > , views:: all_t < P >> ;
(1) (since C++23)
template < class R >

join_with_view ( R && , ranges:: range_value_t < ranges:: range_reference_t < R >> )
- > join_with_view < views:: all_t < R > ,
ranges:: single_view <

ranges:: range_value_t < ranges:: range_reference_t < R >>> ;
(2) (since C++23)

These deduction guides are provided for join_with_view to allow deduction from a range and a delimiter.

1) The delimiter is a range of elements.
2) The delimiter is a single element.

Example