update sqlc ver 2

sqlc.yaml

@@ -1,10 +1,12 @@
-version: "1"
+version: "2"
-packages:
+sql:
-  - name: "db"
+  - engine: "postgresql"
-    path: "./db/sqlc"
+    queries: "./db/queries"
-    queries: "./db/queries/"
+    schema: "./db/migrations"
-    schema: "./db/migrations/"
+    gen:
-    engine: "postgresql"
+      go:
+        package: "db"
+        out: "./db/sqlc"
         emit_json_tags: true
         emit_prepared_queries: false
         emit_interface: true