Merge branch 'svcb_dump' into 'master'

doc/introduction.rst

src/libknot/codes.c

src/libknot/codes.h

src/libknot/consts.h

src/libknot/descriptor.c

src/libknot/descriptor.h

src/libknot/rrset-dump.c

src/libzscanner/NOTES

src/libzscanner/error.c

src/libzscanner/error.h

src/libzscanner/functions.c

src/libzscanner/functions.h

src/libzscanner/scanner.c.g2

src/libzscanner/scanner.c.t0

src/libzscanner/scanner.h

src/libzscanner/scanner.rl

src/libzscanner/scanner_body.rl

tests-extra/data/records.zone

tests-extra/tests/records/load/data/svcb.zone

tests-extra/tests/records/load/test.py