public async Task AddPlugin(List <ZipArchiveEntry> list)
{
var pluginPackageFileArchive = list.FirstOrDefault(x => x.Name == "plugin.json");
if (pluginPackageFileArchive == null)
{
throw new InvalidOperationException("plugin packaged zip needs plugin.json at the top level.");
}
var pluginPackageFile = await new StreamReader(pluginPackageFileArchive.Open()).ReadToEndAsync();
await sharedPlugins.AddPlugin(pluginPackageFile, list.ToList());
}