Merge branch 'xdp_refactor2' into 'master'

Knot.files

src/contrib/dynarray.h

src/knot/server/udp-handler.c

src/libknot/Makefile.inc

src/libknot/xdp/bpf-consts.h

src/libknot/xdp/bpf-kernel-obj.c

src/libknot/xdp/bpf-kernel.c

src/libknot/xdp/bpf-user.c

src/libknot/xdp/msg.h

src/libknot/xdp/msg_init.h

src/libknot/xdp/protocols.h

src/libknot/xdp/tcp.c

src/libknot/xdp/tcp.h

src/libknot/xdp/xdp.c

src/libknot/xdp/xdp.h

src/utils/kxdpgun/load_queries.c

src/utils/kxdpgun/load_queries.h

src/utils/kxdpgun/main.c