phpunit-mysql and phpunit-pgsql hardcoded php 8.2 against server master.
Nextcloud 35 requires php 8.3 or later, so both have been failing on main
with "This version of Nextcloud requires at least PHP 8.3". They now derive
the php and server versions from appinfo/info.xml the way phpunit-sqlite
already does, so they cannot drift out of range again.

No workflow compiled the frontend on pull requests. Only the release
workflow ran npm run build, so a dependency update that broke the build
would pass every check and only fail at release time. Added the org
template node.yml, whose paths filter includes package-lock.json.

The stylelint patterns were unquoted, so the shell expanded them and only
7 of the 21 .vue files were linted. All 21 pass once stylelint expands the
globs itself.

composer.json declared no license, which composer validate warns about.

Signed-off-by: Oleksander Piskun <oleksandr2088@icloud.com>