chore: db related

src/database.rs

@@ -0,0 +1 @@
+

src/schema.rs

@@ -0,0 +1,9 @@
+// @generated automatically by Diesel CLI.
+
+diesel::table! {
+    techs (id) {
+        id -> Nullable<Integer>,
+        tech_short_name -> Nullable<Text>,
+        tech_full_name -> Nullable<Text>,
+    }
+}