Add a generate-all step and auto-generate settings.md (#5080)

## Summary

Ensures that `generate-all` generates both the JSON Schema and the
`settings.md` API reference.

crates/uv-dev/src/compile.rs

@@ -2,6 +2,7 @@ use std::path::PathBuf;
 
 use clap::Parser;
 use tracing::info;
+
 use uv_cache::{Cache, CacheArgs};
 use uv_python::{EnvironmentPreference, PythonEnvironment, PythonRequest};