Fast, security-focused index for pi packages

[`index.pisec.dev`](https://index.pisec.dev) is a community index of the top 1,000 most popular [pi](https://pi.dev) packages, updated daily. By correlating public data from npm and GitHub, the index calculates a security score and highlights potential concerns. This helps pi users evaluate the risks before installing a package. This index helps answer questions like: - How many npm downloads did the package have last month? - Who are the maintainers? - When were the repository and npm package last updated? - How many stars, forks, and watchers does the repository have? - Are the repository and package too new to be trusted? - What aspects of this package might pose a risk to my pi agent?