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.

packages/protocol/src/generated/Invite.ts

@@ -0,0 +1,11 @@
+// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
+
+export type Invite = { 
+/**
+ * Shown once; the server keeps only its hash.
+ */
+token: string, 
+/**
+ * The link to send: opens the server's join page.
+ */
+url: string, expires_at: string, };