distro/arch: generate debug symbols

distro/arch/PKGBUILD

@@ -8,6 +8,8 @@ pkgdesc='full caching DNS resolver implementation'
 url='https://www.knot-resolver.cz/'
 arch=('x86_64')
 license=('GPL3')
+backup=('etc/knot-resolver/kresd.conf')
+options=(debug strip)
 install=install
 depends=('libuv' 'knot>=2.6.4' 'luajit' 'cmocka' 'lua51-sec' 'lua51-socket' 'hiredis' 'libmemcached' 'libsystemd')
 source=("knot-resolver_${pkgver}.orig.tar.xz"