distro: merge -core and -manager into knot-resolver

Merge -core and -manager subpackages back into knot-resolver.

For Debian, also rename package to knot-resolver6 to prevent accidental uprages.

Fedora prefers knot-resolver (without 6) even if it means breakage on upgrade.

Also provide missing -dev package on Debian.

added packaging label

changed title from distro: merge -core and -manager into knot-resolverr to distro: merge -core and -manager into knot-resolver

added 6 commits

• f2cdc606...696aef6b - 2 commits from branch master
• 8420c47a - distro/pkg/deb: use knot-resolver6 prefix
• b8faceb7 - distro/pkg/deb: add -dev package
• c5d645d3 - distro/pkg/rpm: merge -core and -manager into knot-resolver
• c7c39663 - distro/config: bump apkg compat level to latest

Compare with previous version

merged

mentioned in commit 6241c371