Merged PR 3385: Adds Guest Journey with Payment metric

# Description

Adds GJ with Payment. It includes:
* Daily model
* Monthly/MTD without dimension aggregates
* Monthly/MTD with dimension aggregates
* Schema entries for the abovementioned 5 models
* Temporary test to compare against current production KPIs

# 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.
- [NA] 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: #23453

tests/tmp_kpis_refactor_equivalent_guest_journeys_with_payment.sql

@@ -0,0 +1,57 @@
+{% set min_date = "2022-01-01" %}
+{% set dimensions = ("global", "by_billing_country") %}
+-- "by_number_of_listings" excluded on purpose - there's differences because of daily
+-- segmentation
+with
+    new_mtd_guest_journeys_with_payment as (
+        select end_date as date, dimension, dimension_value, guest_journeys_with_payment
+        from {{ ref("int_kpis__aggregated_mtd_guest_journeys_with_payment") }}
+        where
+            end_date >= '{{ min_date }}'
+            and dimension in {{ dimensions }}
+            and dimension_value <> 'UNSET'
+    ),
+    new_monthly_guest_journeys_with_payment as (
+        select end_date as date, dimension, dimension_value, guest_journeys_with_payment
+        from {{ ref("int_kpis__aggregated_monthly_guest_journeys_with_payment") }}
+        where
+            end_date >= '{{ min_date }}'
+            and dimension in {{ dimensions }}
+            and dimension_value <> 'UNSET'
+    ),
+    new_guest_journeys_with_payment as (
+        select *
+        from new_mtd_guest_journeys_with_payment
+        union all
+        select *
+        from new_monthly_guest_journeys_with_payment
+    ),
+    old_guest_journeys_with_payment as (
+        select
+            date,
+            dimension,
+            dimension_value,
+            paid_guest_journeys as guest_journeys_with_payment
+        from {{ ref("int_core__mtd_guest_journey_metrics") }}
+        where date >= '{{ min_date }}' and dimension in {{ dimensions }}
+    ),
+    comparison as (
+        select
+            coalesce(o.date, n.date) as date,
+            coalesce(o.dimension, n.dimension) as dimension,
+            coalesce(o.dimension_value, n.dimension_value) as dimension_value,
+            o.guest_journeys_with_payment as old_guest_journeys_with_payment,
+            n.guest_journeys_with_payment as new_guest_journeys_with_payment,
+            coalesce(o.guest_journeys_with_payment, 0)
+            - coalesce(n.guest_journeys_with_payment, 0) as diff
+        from old_guest_journeys_with_payment o
+        full outer join
+            new_guest_journeys_with_payment n
+            on o.date = n.date
+            and o.dimension = n.dimension
+            and o.dimension_value = n.dimension_value
+    )
+select *
+from comparison
+where diff <> 0
+order by date desc, abs(diff) desc