Installs Rekindle and generates the selected plugin's Rust client.
External plugin packages can call run/2 from their own Igniter task with
the plugin module already selected:
Rekindle.Install.run(igniter,
plugin: MyUi.RekindlePlugin,
targets: [:web, :desktop]
)The regular Rekindle installer accepts the built-in gpui, egui, and
slint aliases. When it finds a Phoenix endpoint, it also installs the Web
development and static delivery integration.