Merged PR 3373: Setting current KPIs models for deprecation

# Description

Sets up warning for KPIs models that will be deprecated, which are:
* 13 in core
* 2 in xero
* 5 in cross

I will keep alive the cross models that handle the final aggregations for Main KPIs for the time being, as well as the newly created Churn model that has a dependency on the monthly by deal to be filled into the mtd flow. I think handling exposure logic for Main KPIs could be a separated migration.

In other words, this is already quite a bit to migrate.

# Checklist

 **I just checked that dbt compiles correctly**

- [NA] The edited models and dependants run properly with production data.
- [NA] The edited models are sufficiently documented.
- [NA] The edited models contain PK tests, and I've ran and passed them.
- [NA] I have checked for DRY opportunities with other models and docs.
- [NA] 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: #23268

models/intermediate/xero/schema.yml

@@ -3,34 +3,34 @@ version: 2
 models:
   - name: int_xero__invoices
     columns:
-    - name: id_invoice
-      tests:
-        - not_null
-        - unique
+      - name: id_invoice
+        tests:
+          - not_null
+          - unique
   - name: int_xero__credit_notes
     columns:
-    - name: id_credit_note
-      tests:
-        - not_null
-        - unique
+      - name: id_credit_note
+        tests:
+          - not_null
+          - unique
   - name: int_xero__invoice_line_items
     columns:
-    - name: id_line_item
-      tests:
-        - not_null
-        - unique
+      - name: id_line_item
+        tests:
+          - not_null
+          - unique
   - name: int_xero__credit_note_line_items
     columns:
-    - name: id_line_item
-      tests:
-        - not_null
-        - unique
+      - name: id_line_item
+        tests:
+          - not_null
+          - unique
   - name: int_xero__bank_transactions
     columns:
-    - name: id_bank_transaction
-      tests:
-        - not_null
-        - unique
+      - name: id_bank_transaction
+        tests:
+          - not_null
+          - unique
 
   - name: int_xero__sales_denom_mart
     description: |
@@ -58,7 +58,7 @@ models:
 
       Fields are not documented here: you can find more details in upstream 
       models.
-      
+
     columns:
       - name: id_line_item
         data_type: text
@@ -79,9 +79,9 @@ models:
           - not_null
           - accepted_values:
               values:
-                - 'invoice'
-                - 'credit note'
-                
+                - "invoice"
+                - "credit note"
+
       - name: id_account
         data_type: text
         description: ""
@@ -265,12 +265,14 @@ models:
       This model contains the historic information regarding invoicing metrics for each deal id. 
       It's used for the business KPIs in the view by deal id. Data is aggregated at the last
       day of the month, or up to yesterday if it's the current month.
-    tests: 
+    tests:
       - dbt_utils.unique_combination_of_columns:
           combination_of_columns:
             - date
             - id_deal
 
+    deprecation_date: 2024-11-30
+
     columns:
       - name: date
         data_type: date
@@ -280,7 +282,7 @@ models:
 
       - name: id_deal
         data_type: character varying
-        description: Id of the deal associated to the host. 
+        description: Id of the deal associated to the host.
         tests:
           - not_null
 
@@ -291,13 +293,15 @@ models:
       It's used for the business KPIs. Data is aggregated at the last day of the month and in the
       days necessary for the Month-to-Date computation of the current month.
 
-    tests: 
+    deprecation_date: 2024-11-30
+
+    tests:
       - dbt_utils.unique_combination_of_columns:
           combination_of_columns:
             - date
             - dimension
             - dimension_value
-            
+
     columns:
       - name: date
         data_type: date
@@ -310,11 +314,11 @@ models:
         description: The dimension or granularity of the metrics.
         tests:
           - accepted_values:
-                values:
+              values:
                 - global
                 - by_number_of_listings
                 - by_billing_country
-      
+
       - name: dimension_value
         data_type: string
         description: The value or segment available for the selected dimension.