Merged PR 2615: Beautification of KPIs dimensions

# Description

Changes:

* Separate 1) the internal naming of dimensions available within DWH vs. 2) the display of the dimensions in the reporting. Mainly it changes the "by_number_of_listings" to display "By # of Listings Booked in 12 Months". I edited the production macro since to me it's linked to when things are available for display.
* Add preceding zeros on the segmentation so it's ordered correctly. Before, the segment 21-60 was displayed before the 6-20.
* Also added some capital letters to the schema config of the reporting model :)

I attach a screenshot of how it looks in PBI in my local development branch to exemplify why this is "Beautification". Be aware that merging this also puts in production the dimensions.

![image.png](https://guardhog.visualstudio.com/4148d95f-4b6d-4205-bcff-e9c8e0d2ca65/_apis/git/repositories/54ac356f-aad7-46d2-b62c-e8c5b3bb8ebf/pullRequests/2615/attachments/image.png)

# 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: #19325

models/reporting/general/mtd_aggregated_metrics.sql

@@ -1,12 +1,26 @@
 {% set production_dimensions = get_kpi_dimensions_for_production() %}
 
 with
+    dimensions as (
+        {% for dimension in production_dimensions %}
+            select 
+                {{ dimension.dimension }} as dimension,
+                {{ dimension.dimension_display }} as dimension_display
+            {% if not loop.last %}
+                union all
+            {% endif %}
+        {% endfor %}
+    ),
     int_mtd_aggregated_metrics as (
-        select * from {{ ref("int_mtd_aggregated_metrics") }}
+        select 
+            m.*, 
+            d.dimension_display
+        from {{ ref("int_mtd_aggregated_metrics") }} m
         -- The following clause limits the display execution
         -- to only include those dimensions configured to 
         -- appear for production purposes
-        where dimension in ({{ production_dimensions }})
+        inner join dimensions d 
+        on m.dimension = d.dimension
     )
 
 select
@@ -17,7 +31,7 @@ select
     is_current_month as is_current_month,
     first_day_month as first_day_month,
     date as date,
-    dimension as dimension,
+    dimension_display as dimension,
     dimension_value as dimension_value,
     previous_year_date as previous_year_date,
     order_by as order_by,