runtime(debian): update debian related runtime files (vim/vim#13423)
* Update Debian runtime files
Add mantic as a supported Ubuntu release and move buster/kinetic to
unsupported.
Add syntax highlighting for deb822sources filetype.
Add debsources ftplugin to set relevant comment options.
Move common version information to shared/debversions.vim
Closesvim/vim#11934
* Add myself as codeowner for Debian-related runtime files
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7b7cda67a1
Co-authored-by: James McCoy <jamessan@jamessan.com>
Co-authored-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Co-authored-by: James Addison <jay@jp-hosting.net>
Co-authored-by: Viktor Szépe <viktor@szepe.net>
Co-authored-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Co-authored-by: James Addison <jay@jp-hosting.net>
Co-authored-by: Viktor Szépe <viktor@szepe.net>