Create TrackedTimeEntry as more general replacement of Attendance to include preparation and review

db/migrate/20231006200812_create_tracked_time_entries.rb

@@ -0,0 +1,11 @@
+class CreateTrackedTimeEntries < ActiveRecord::Migration[7.1]
+  def change
+    create_table :tracked_time_entries do |t|
+      t.references :lecture, null: false, foreign_key: true
+      t.integer :kind
+      t.jsonb :toggl_data
+
+      t.timestamps
+    end
+  end
+end