Merged PR 3879: Feedback on current process

# Description

Rename changes and adding some necessary fields like `id_currency` to some S&P models

# Checklist

- [x] The edited models and dependants run properly with production data.
- [x] The edited models are sufficiently documented.
- [x] The edited models contain PK tests, and I've ran and passed them.
- [x] I have checked for DRY opportunities with other models and docs.
- [x] I've picked the right materialization for the affected models.

# Other

- [ ] Check if a full-refresh is required after this PR is merged.

Feedback on current process

Related work items: #25360

models/intermediate/core/schema.yml

@@ -4590,6 +4590,16 @@ models:
         data_type: bigint
         description: "Identifier of the type of user."
 
+      - name: id_currency
+        data_type: bigint
+        description: "Id of the currency, works as a foreign key to the
+          currency table"
+        tests:
+          - not_null
+          - relationships:
+              to: ref('stg_core__currency')
+              field: id_currency
+
       - name: id_deal
         data_type: text
         description: ""