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/2022-07-09-161305_update_is_delete/down.sql

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

htyws_models/migrations/2022-07-09-161305_update_is_delete/up.sql

@@ -0,0 +1,6 @@
+-- Your SQL goes here
+
+update lianxi set is_delete='false';
+update piyue set is_delete='false';
+update comments set is_delete='false';
+update piyue_info set is_delete='false';