feat: collect onboarding events in separate table (#8020)

src/migrations/20240830102144-onboarding-events.js

@@ -0,0 +1,30 @@
+'use strict';
+
+exports.up = function (db, cb) {
+    db.runSql(
+        `
+            CREATE TABLE IF NOT EXISTS onboarding_events_instance (
+                event VARCHAR(255) NOT NULL,
+                time_to_event INTEGER NOT NULL, -- in seconds
+                PRIMARY KEY (event)
+            );
+
+            CREATE TABLE IF NOT EXISTS onboarding_events_project (
+               event VARCHAR(255) NOT NULL,
+               time_to_event INTEGER NOT NULL, -- in seconds
+               project VARCHAR(255) NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
+               PRIMARY KEY (event, project)
+            );
+        `,
+        cb,
+    );
+};
+
+exports.down = function (db, cb) {
+    db.runSql(
+        `
+            DROP TABLE IF EXISTS onboarding_events_instance;
+            DROP TABLE IF EXISTS onboarding_events_project;
+        `,
+        cb);
+};