- Adds an update script to fetch the compatible web vault version
- Removes `vaultwarden-vault` from top-level to prevent independent
updates through e.g. r-ryantm. Istead the vault is now accessible
at `vaultwarden.webvault`.
- The name webvault was chosen because it is the title of the projects
README and it makes it clearer, that this is the web UI.
