Merged PR 4138: Adds Account Code Name in reporting

# Description

Adds account code name in reporting for sales denom mart in xero

# 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.

Related work items: #26618

models/reporting/xero/schema.yml

@@ -1380,3 +1380,8 @@ models:
         data_type: character varying
         description: |
           The default macro-aggregation for Financial reporting.
+
+      - name: account_code_name
+        data_type: character varying
+        description: |
+          The code and name of the account separated by a "-".

models/reporting/xero/xero__sales_denom_mart.sql

@@ -42,5 +42,6 @@ select
     sdm.contact_name as contact_name,
     sdm.accounting_root_aggregation as accounting_root_aggregation,
     sdm.accounting_kpis_aggregation as accounting_kpis_aggregation,
-    sdm.accounting_financial_aggregation as accounting_financial_aggregation
+    sdm.accounting_financial_aggregation as accounting_financial_aggregation,
+    sdm.account_code || '-' || sdm.account_name as account_code_name
 from int_xero__sales_denom_mart sdm