Extend Package Registry DB Table

app/finders/packages/helm/packages_finder.rb

app/helpers/application_settings_helper.rb

app/models/application_setting.rb

app/models/application_setting_implementation.rb

...rs/json_schemas/application_setting_package_registry.json

...ws/admin/application_settings/_package_registry.html.haml

.../application_settings/_packages_limits_settings.html.haml

config/routes/admin.rb

doc/api/settings.md

doc/development/packages/settings.md

doc/user/packages/helm_repository/_index.md

...iews/admin/application_settings/_ee_package_registry.haml

locale/gitlab.pot

spec/finders/packages/helm/packages_finder_spec.rb

spec/models/application_setting_spec.rb

...tion_settings/_packages_limits_settings.html.haml_spec.rb