Merge pull request #14724 from rgacogne/meson

dnsdist: Add meson support

diff --cc ext/lmdb-safe/lmdb-safe.hh
Simple merge

diff --cc pdns/dnsdistdist/dnsdist-carbon.cc
Simple merge

diff --cc pdns/dnsdistdist/dnsdist-web.cc
Simple merge

diff --cc pdns/dnsdistdist/doh.cc
Simple merge

diff --cc pdns/dnsdistdist/test-dnsdistrules_cc.cc
Simple merge

diff --cc tasks.py
Simple merge