Possibility to disable (or enhance) logging from png and jpeg extensions (maybe others)

### Is your feature request related to a problem? Please describe.

In case of error both [libjpeg](https://github.com/boostorg/gil/blob/develop/include/boost/gil/extension/io/jpeg/detail/writer_backend.hpp#L94) and [libpng](https://github.com/boostorg/gil/blob/develop/include/boost/gil/extension/io/png/detail/writer_backend.hpp#L59) will write message to stderr in contrast with [libtiff](https://github.com/boostorg/gil/blob/develop/include/boost/gil/extension/io/tiff/detail/log.hpp#L23) where can be logging turned off.

### Describe the solution you'd like

Possibility to turn off writing error messages to stderr.

### Describe alternatives you've considered

Maybe incorporate error messages from used libraries into exception error string. So instead of something like this:

stderr: `libpng error: [00][00][00][00]: invalid chunk type`
C++ exception what(): "png is invalid: iostream error"

It could be:

C++ exception what(): "png is invalid: [00][00][00][00]: invalid chunk type"

This would be nice for all extensions including tiff.