Catalog metadata and helpers for first-party Silo plugins.
Plugin repositories should dispatch plugin_release_published after publishing
a release. Set SILO_PLUGINS_DISPATCH_TOKEN in the plugin repository so it can
call repository_dispatch on Silo-Server/silo-plugins.
silo-plugins uses CATALOG_PUSH_TOKEN to push catalog updates. If plugin
repositories are private, also set CATALOG_SOURCE_TOKEN in silo-plugins so
the updater can read release metadata and the tagged manifest.json.
silo-plugins is licensed under Apache-2.0. See LICENSE.