Add a new effect to @remotion/effects, including implementation, package exports, docs, demos, preview images, Remotion skill updates, tests, formatting, and builds.
$npx -y skills add remotion-dev/remotion --skill add-effectInstalls into the current project.
Run `npx skills use "https://github.com/remotion-dev/remotion" --skill "remotion-dev/remotion/add-effect"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/remotion-dev/remotion" that are relevant to the current task. Run `npx skills add "https://github.com/remotion-dev/remotion"` and select the relevant skills, then follow their instructions.