add remaining migrations

db/migrate/20240914221852_create_events.rb

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+ROM::SQL.migration do
+  change do
+    create_table :events do
+      primary_key :id
+      column :name, String, null: false
+    end
+  end
+end

db/migrate/20240914223804_create_tables.rb

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+ROM::SQL.migration do
+  change do
+    create table :tables do
+      primary_key :id
+      foreign_key :event_id, :events
+    end
+  end
+end

db/migrate/20240914223812_create_games.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+ROM::SQL.migration do
+  change do
+  end
+end