* feat: Add a way to run ingester with an in-memory catalog from the CLI
If you set the --catalog-dsn string to "mem", rather than using that as
a Postgres connection URL, create an in-memory catalog.
Planning on using this in tests, so not documenting.
* fix: Set default topic to the same value as SHARED_KAFKA_TOPIC
Namely, both should use an underscore. I don't think there's a way to
directly share these values between a constant and an annotation.
* feat: Add a flight API (handshake only) to ingester
* fix: Create partitions if using file-based write buffer
* fix: Change the server fixture to handle ingester server type
For now, the ingester doesn't implement the deployment API. Not sure if
it should or not.
* feat: Start implementing ingester do_get, namely decoding the query
Skip serialization of the predicate for the moment.
* refactor: Rename ingest protos to ingester to match crate name
* refactor: Rename QueryResults to QueryData
* feat: Move ingester flight client to new querier crate
* fix: Off by one error, different starting indexes in sequencers
* fix: Create new CLI argument to pick the catalog type
* fix: Create a CLI option to set the number of topics to auto-create in the write buffer
* fix: Check the arrow flight service's health to tell that the ingester gRPC is up
* fix: Set postgres as the default catalog type
* fix: Return an error rather than panicking if CLI args aren't right