Configures a Phoenix app to import the prebuilt LivePanels browser package from the Mix dependency.
mix livepanels.install
mix livepanels.install --package assets/package.json
mix livepanels.install --checkThe task writes a livepanels file dependency into the application
assets/package.json. Application asset builds then import the browser hook and CSS
from the package root instead of copying LivePanels source into the application tree.