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.

.moon/workspace.yml

@@ -0,0 +1,9 @@
+# moon governs the repository: one task graph over the Rust crates and the
+# TypeScript package. `moon run :check` and `moon ci` run what a change affects.
+$schema: 'https://moonrepo.dev/schemas/workspace.json'
+projects:
+  - 'crates/*'
+  - 'packages/*'
+vcs:
+  manager: git
+  defaultBranch: main