add: transactions model

warehouse/dbt/models/intermediate/metrics/onchain/int_onchain_metric__transactions.sql

@@ -0,0 +1,15 @@
+select
+  events.project_id,
+  events.event_source as network,
+  time_intervals.time_interval,
+  'transaction_count' as metric,
+  SUM(events.amount) as amount
+from {{ ref('int_events_daily_to_project') }} as events
+cross join {{ ref('int_time_intervals') }} as time_intervals
+where
+  events.event_type = 'CONTRACT_INVOCATION_SUCCESS_DAILY_COUNT'
+  and events.bucket_day >= time_intervals.start_date
+group by
+  events.project_id,
+  events.event_source,
+  time_intervals.time_interval