This commit introduces two new commands: `pwa` and `serve`.
The `pwa` command downloads a Progressive Web Application (PWA) from a given URL. It discovers the PWA's manifest, downloads the assets referenced in the manifest (start URL and icons), and packages them into a single `.tar` file.
The `serve` command takes a `.tar` file created by the `pwa` command and serves its contents using a standard Go HTTP file server. It unpacks the tarball into an in-memory filesystem, making it a self-contained and efficient way to host the downloaded PWA.
This commit introduces the core functionality of the Borg Data Collector.
- Adds the `collect` command to clone a single Git repository and store it in a Trix cube.
- Adds the `collect all` command to clone all public repositories from a GitHub user or organization.
- Implements the Trix cube as a `tar` archive.
- Adds the `ingest` command to add files to a Trix cube.
- Adds the `cat` command to extract files from a Trix cube.
- Integrates Borg-themed status messages for a more engaging user experience.
