modules: separate modules into own directories

Knot.files

src/Makefile.am

src/knot/conf/scheme.c

src/knot/modules/dnsproxy/dnsproxy.c

src/knot/modules/dnsproxy/dnsproxy.h

src/knot/modules/dnstap/dnstap.c

src/knot/modules/dnstap/dnstap.h

src/knot/modules/noudp/noudp.c

src/knot/modules/noudp/noudp.h

src/knot/modules/online_sign/online_sign.c

src/knot/modules/online_sign/online_sign.h

src/knot/modules/rosedb/rosedb.c

src/knot/modules/rosedb/rosedb.h

src/knot/modules/rosedb/rosedb_tool.c

src/knot/modules/synth_record/synth_record.c

src/knot/modules/synth_record/synth_record.h

src/knot/modules/whoami/whoami.c

src/knot/modules/whoami/whoami.h

src/knot/nameserver/query_module.c

src/knot/nameserver/query_module.h