chore: move the go code into a subfolder

apps/api/cmd/setup/15/01_new_failed_events.sql

@@ -0,0 +1,16 @@
+CREATE TABLE IF NOT EXISTS projections.failed_events2 (
+    projection_name TEXT NOT NULL
+    , instance_id TEXT NOT NULL
+
+    , aggregate_type TEXT NOT NULL
+    , aggregate_id TEXT NOT NULL
+    , event_creation_date TIMESTAMPTZ NOT NULL
+    , failed_sequence INT8 NOT NULL
+
+    , failure_count INT2 NULL DEFAULT 0
+    , error TEXT
+    , last_failed TIMESTAMPTZ
+    
+    , PRIMARY KEY (projection_name, instance_id, aggregate_type, aggregate_id, failed_sequence)
+);
+CREATE INDEX IF NOT EXISTS fe2_instance_id_idx on projections.failed_events2 (instance_id);