dns: add dns.rcode keyword v7 #8510

Job	Run time
Prepare dependencies	1m 7s
Prepare cbindgen	12s
AlmaLinux 8	6m 26s
AlmaLinux 9	12m 43s
AlmaLinux 9 Test Templates	4m 56s
Fedora 38 (Suricata Verify codecov)	6m 44s
Fedora 38 (gcc, debug, asan, wshadow, rust-strict)	8m 3s
Fedora 38 (clang, debug, asan, wshadow, rust-strict, systemd)	56m 54s
AlmaLinux 9 (no jansson)	1m 17s
Fedora 39 (clang, debug, asan, wshadow, rust-strict, systemd)	7m 41s
Fedora 39 (gcc, debug, asan, wshadow, rust-strict)	8m 2s
Fedora 39 (non-root, debug, clang, asan, wshadow, rust-strict, systemd)	7m 43s
Debian 10	7m 35s
Debian 11 (xdp)	7m 38s
Debian 12	24m 3s
Debian 12 Dist Builder	5m 44s
Debian 12 MSRV	22m 11s
MacOS Latest	31m 20s
Ubuntu 20.04 (-DNDEBUG)	10m 23s
Ubuntu 22.04 (fuzz corpus coverage)	10m 30s
Ubuntu 22.04 (unittests coverage)	6m 27s
Ubuntu 22.04 (Debug Validation)	10m 48s
Ubuntu 22.04 (Fuzz)	6m 27s
Ubuntu 22.04 (DPDK Build) (22.11.3)	15m 17s
Ubuntu 22.04 (Netmap build)	4m 40s
Ubuntu 22.04 (DPDK Build) (21.11.5)	14m 9s
Ubuntu 22.04 (DPDK Build) (20.11.9)	11m 20s
Ubuntu 22.04 (DPDK Build) (19.11.14)	10m 39s
Windows MSYS2 MINGW64 (libpcap)	24m 21s
Windows MSYS2 MINGW64 (NPcap)	24m 43s
Windows MSYS2 MINGW64 (WinDivert)	12m 41s
CentOS 7	15m 16s
CentOS Stream 9	5m 33s
CentOS Stream 8	5m 45s
Ubuntu 20.04 (unsupported rust)	1m 16s
	6h 50m 34s

Provide feedback