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/2022-09-04-170511_refactor_ref_resource_group/down.sql

@@ -0,0 +1 @@
+-- This file should undo anything in `up.sql`

htyws_models/migrations/2022-09-04-170511_refactor_ref_resource_group/up.sql

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+-- Your SQL goes here
+alter table resource_note_group
+    drop constraint resource_note_group_ref_resources_id_fk;
+
+alter table resource_note_group
+    rename column ref_resource_id to ref_resource_ids;
+
+alter table resource_note_group
+    alter column ref_resource_ids type jsonb using ref_resource_ids::jsonb;
+
+alter table resource_note_group
+    alter column ref_resource_ids drop not null;
+