libknot: move namedb from internal as knot_db

Knot.files

src/Makefile.am

src/knot/conf/base.c

src/knot/conf/base.h

src/knot/conf/conf.c

src/knot/conf/conf.h

src/knot/conf/confdb.c

src/knot/conf/confdb.h

src/knot/conf/confio.c

src/knot/conf/tools.h

src/knot/ctl/remote.h

src/knot/server/server.h

src/knot/zone/events/events.c

src/knot/zone/events/events.h

src/knot/zone/timers.c

src/knot/zone/timers.h

src/knot/zone/zonedb-load.c

src/libknot/db/db.h

src/libknot/db/db_lmdb.c

src/libknot/db/db_lmdb.h