Chore: add apdex telemetry view

libs/medic-users-meta/migrations/20240315.do.view_apdex_scores.sql

@@ -0,0 +1,33 @@
+CREATE VIEW view_apdex_scores AS
+WITH apdex_telemetry_data AS (
+  SELECT
+    substring(metric from '^(.*):apdex:') AS event_category,
+    CASE
+      WHEN metric LIKE '%:satisfied' THEN 'satisfied'
+      WHEN metric LIKE '%:tolerable' THEN 'tolerable'
+      WHEN metric LIKE '%:frustrated' THEN 'frustrated'
+    END AS event_type,
+    SUM(count) AS event_count
+  FROM
+    useview_telemetry_metrics
+  WHERE metric LIKE '%:apdex:%'
+  GROUP BY event_category, event_type
+), 
+apdex_scores AS (
+  SELECT
+    event_category,
+    SUM(CASE WHEN event_type = 'satisfied' THEN event_count ELSE 0 END) AS satisfied_count,
+    SUM(CASE WHEN event_type = 'tolerable' THEN event_count ELSE 0 END) AS tolerable_count,
+    SUM(CASE WHEN event_type = 'frustrated' THEN event_count ELSE 0 END) AS frustrated_count,
+    SUM(event_count) AS total_event_count
+  FROM apdex_telemetry_data
+  GROUP BY event_category
+)
+SELECT
+  event_category,
+  satisfied_count,
+  tolerable_count,
+  frustrated_count,
+  ROUND(((satisfied_count + (tolerable_count / 2.0)) / total_event_count)::numeric, 2) AS apdex_score
+FROM apdex_scores
+ORDER BY apdex_score asc;