add a parse from view

[reder2000]

add the missing trim for returning std::string_view in single file

[reder2000]

In the same fashion as parse(std::string), parse_view(std::string_view).
Super handful to process a csv in // when cell "inspection" may take some time.
I added also an "address" to get the row buffer position (as I process chunks in //) because parsing errors are more difficult to track than sequentially.