chore add core rust project files and diesel migrations

Track required workspace crates, scripts, and historical diesel migrations so the repository contains the complete runnable backend baseline.

Made-with: Cursor

htyws_models/migrations/2022-11-09-142840_add_qumu_group_tbl/up.sql

@@ -0,0 +1,11 @@
+-- Your SQL goes here
+
+create table qumu_group
+(
+    id         varchar not null primary key unique,
+    group_name varchar not null,
+    qumu_ids   jsonb,
+    created_at timestamp,
+    created_by timestamp
+);
+