feat: add Hoarder template

[drudge]

This pull request introduces a new template for the Hoarder application, an open-source "Bookmark Everything" app that uses AI for tagging content. The changes include adding configuration for Docker Compose, generating environment variables and domains, and registering the new template.

Key changes:

Docker Compose Configuration:

• Added a docker-compose.yml file to set up services for Hoarder, including web, chrome, and meilisearch with their respective configurations.

Environment and Domain Generation:

• Implemented a generate function in index.ts to create environment variables and domain configurations for the Hoarder template.

Template Registration:

• Added the Hoarder template to the list of available templates in templates.ts, including metadata such as description, version, and links.