feat: documentation for new instance deployment

[luizirber]

• Allow running in {docker,podman}-compose
• Add docs and initial tutorial for deploying a new instance with example datasets
• Bring in the search index as additional Docker container in compose
• Use pixi for dep management
• Trigger metadata update for mongodb outside image creation, use only one mongodb container in compose
• Add sentry for monitoring (opt-in)
• Flask app checks for errors from the search index
• Use docker links to connect to mongodb and search index by container name
• Update mgnify component to (unreleased) one containing better sequence parsing: https://github.com/EBI-Metagenomics/mgnify-sourmash-component/pull/4
• Update sourmash to 0.13.0 (rust) and use new APIs for revindex
• Add snakemake rules for building search index from example datasets

[luizirber]

How badly does this break your dev workflow @bluegenes @SuzanneFleishman?

Need to add instructions/share sentry ingestion URL (or be able to start without one), but this is pretty much what is running in production at JGI