feat: sqlite 1 (#10004)

Add a `.sqlite` database to be used to store rollout metatdata (and
later logs)
This PR is phase 1:
* Add the database and the required infrastructure
* Add a backfill of the database
* Persist the newly created rollout both in files and in the DB
* When we need to get metadata or a rollout, consider the `JSONL` as the
source of truth but compare the results with the DB and show any errors

codex-rs/otel/src/metrics/mod.rs

@@ -17,6 +17,6 @@ pub(crate) fn install_global(metrics: MetricsClient) {
     let _ = GLOBAL_METRICS.set(metrics);
 }
 
-pub(crate) fn global() -> Option<MetricsClient> {
+pub fn global() -> Option<MetricsClient> {
     GLOBAL_METRICS.get().cloned()
 }