This commit introduces a new `rootfs` package that provides an encrypted passthrough storage system. The `LocalStorage` implementation uses the local file system as its backing store and encrypts all data at rest using the `chachapoly` package.
The functionality is exposed through the main `crypt` package, providing a clean and simple API for creating and interacting with encrypted file-based storage.
This commit ports the crypt library from the Core repository to the Enchantrix repository. It includes the following changes:
- The project is now a Go module.
- The `lthn` and `crypt` packages have been ported from the Core repository.
- The PGP functionality has been commented out pending resolution of dependency issues.
- The old Deno project has been moved to the `vault` directory.
- The README has been updated to reflect the new project structure.
