runtime(deb822sources): add missing Enabled field in syntax script

runtime(deb822sources): add missing Enabled field in syntax script

closes: #14898

It lacks the support of Enabled: boolean option field [1]:

e.g.

  Types: deb
  Uris: https://paulcarroty.gitlab.io/vscodium-deb-rpm-repo/debs/
  Components: main
  Suites: vscodium
  Architectures: amd64 i386 arm64 armhf
  Enabled: yes
  Signed-By: /var/lib/extrepo/keys/vscodium.asc
This patch was also forwarded to upstream. [2]

[1] https://manpages.debian.org/unstable/apt/sources.list.5.en.html#DEB822-STYLE_FORMAT
[2] https://salsa.debian.org/vim-team/vim-debian/-/merge_requests/16

Signed-off-by: Kentaro Hayashi <kenhys@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>