Improve zlomekFS Doxygwn documentation

modified:   ../../CMakeLists.txt
modified:   ../../Doxyfile.in
modified:   ../control/cli/inc/control_zfsd_cli.h
modified:   ../control/cli/src/CMakeLists.txt
new file:   ../control/cli/src/xsl/cli2html.xsl
new file:   design.h
new file:   implementation.h
modified:   mainpage.h
modified:   ../fs-entities/journal/journal.h
modified:   ../lib/hashfile/hashfile.c
modified:   ../lib/hashfile/hashfile.h
modified:   ../zfs-protocol/zfs-prot.h