Multi-binary setup

[kevinmichaelchen]

We'll need one binary for the server. We'll need another binary for the CLI.

Per the docs:

The default executable file is src/main.rs.
Other executables can be placed in src/bin/.

[kevinmichaelchen]

Do we even need 2 binaries? Can SurrealDB run embedded alongside the CLI command execution? Would that be inefficient, since it would have to ingest all the local Markdown files on each invocation?

let ds = Datastore::new("memory").await?;