Merged PR 4504: Onboarding MRR + Visualisation changes

# Description

Changes:
* Adds Onboarding MRR
* Refactors exclusion code for ongoing month / invoicing cycle
* Adds sign format on relative differences

# 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: #27609, #27805

models/reporting/general/schema.yml

@@ -2131,3 +2131,38 @@ models:
         description: |
           Achievement rate between the current year YTD and the EOFY target. It can be null
           if the target is not available.
+
+      - name: rel_diff_with_sign_current_month_mtd_vs_previous_month_eom
+        data_type: numeric
+        description: |
+          Relative difference between the current month MTD and the previous month EOM, 
+          with a sign to represent if the relative difference is good (positive) or bad 
+          (negative) for our business.
+
+      - name: rel_diff_with_sign_current_month_mtd_vs_previous_year_mtd
+        data_type: numeric
+        description: |
+          Relative difference between the current month MTD and the previous year MTD, 
+          with a sign to represent if the relative difference is good (positive) or bad 
+          (negative) for our business.
+
+      - name: rel_diff_with_sign_current_ytd_vs_previous_ytd
+        data_type: numeric
+        description: |
+          Relative difference between the current year YTD and the previous year YTD, 
+          with a sign to represent if the relative difference is good (positive) or bad 
+          (negative) for our business.
+
+      - name: rel_diff_with_sign_current_month_mtd_vs_eom_target
+        data_type: numeric
+        description: |
+          Relative difference between the current month MTD and the EOM target, 
+          with a sign to represent if the relative difference is good (positive) or bad 
+          (negative) for our business.
+
+      - name: rel_diff_with_sign_current_ytd_vs_ytd_target
+        data_type: numeric
+        description: |
+          Relative difference between the current year YTD and the YTD target, 
+          with a sign to represent if the relative difference is good (positive) or bad 
+          (negative) for our business.

models/reporting/general/ytd_mtd_aggregated_main_metrics_overview.sql

@@ -3,8 +3,9 @@ with
         select * from {{ ref("int_ytd_mtd_aggregated_main_metrics_overview") }}
     ),
     latest_dates_per_financial_year as (
-        select dimension, financial_year, id_metric, max(date) as latest_available_date
-        from int_ytd_mtd_aggregated_main_metrics_overview
+        select
+            dimension, financial_year, id_metric, max(m.date) as latest_available_date
+        from int_ytd_mtd_aggregated_main_metrics_overview m
         where
             (
                 (
@@ -12,20 +13,17 @@ with
                     -- invoicing cycle and it is before the 20th of the month, if it
                     -- is the 20th of the month or after, only exclude the current
                     -- month.
-                    requires_invoicing_data = true
+                    display_exclusion = 'INVOICING'
                     and {{ is_date_before_20th_of_previous_month("date") }}
                 )
-                -- Keep all history for the rest of metrics
-                or requires_invoicing_data = false
-            )
-            -- Handle exclusion for Churn/MRR metrics: do not show them in the current
-            -- month.
-            and not (
-                (
-                    lower(metric_name) like '%revenue%churn%rate%'
-                    or lower(metric_name) like '%onboarding%mrr%'
+                or (
+                    -- Handle exclusion for Churn/MRR metrics: do not show them in the
+                    -- current month.
+                    display_exclusion = 'ONGOING_MONTH'
+                    and date_trunc('month', m.date) > date_trunc('month', current_date)
                 )
-                and date_trunc('month', "date") = date_trunc('month', current_date)
+                -- Keep all history for the rest of metrics
+                or display_exclusion = 'NONE'
             )
         group by dimension, financial_year, id_metric
     )
@@ -65,7 +63,17 @@ select
     m.target_eofy_value as target_eofy_value,
     m.diff_current_ytd_vs_eofy_target as diff_current_ytd_vs_eofy_target,
     m.achievement_rate_current_ytd_vs_eofy_target
-    as achievement_rate_current_ytd_vs_eofy_target
+    as achievement_rate_current_ytd_vs_eofy_target,
+    m.rel_diff_with_sign_current_month_mtd_vs_previous_month_eom
+    as rel_diff_with_sign_current_month_mtd_vs_previous_month_eom,
+    m.rel_diff_with_sign_current_month_mtd_vs_previous_year_mtd
+    as rel_diff_with_sign_current_month_mtd_vs_previous_year_mtd,
+    m.rel_diff_with_sign_current_ytd_vs_previous_ytd
+    as rel_diff_with_sign_current_ytd_vs_previous_ytd,
+    m.rel_diff_with_sign_current_month_mtd_vs_eom_target
+    as rel_diff_with_sign_current_month_mtd_vs_eom_target,
+    m.rel_diff_with_sign_current_ytd_vs_ytd_target
+    as rel_diff_with_sign_current_ytd_vs_ytd_target
 from int_ytd_mtd_aggregated_main_metrics_overview m
 inner join
     latest_dates_per_financial_year ld