Archify Sync server, Dockerfile and Helm chart

Rust server (axum, yrs, sqlx/PostgreSQL): live shared models over the y-websocket protocol, versions, browser sign-in with PKCE, invites, single sign-on through OIDC, metrics. Docker image on distroless, compose file, and a Helm chart with one pod, optional bundled PostgreSQL and secrets from existing Secrets.

.cargo/config.toml

@@ -0,0 +1,3 @@
+[env]
+# ts-rs writes the protocol types here on `cargo test -p archify-sync-protocol`.
+TS_RS_EXPORT_DIR = { value = "packages/protocol/src/generated", relative = true }