Add zap model, user relation

db/migrate/20240422171653_create_zaps.rb

@@ -0,0 +1,13 @@
+class CreateZaps < ActiveRecord::Migration[7.1]
+  def change
+    create_table :zaps do |t|
+      t.references :user, null: false, foreign_key: true
+      t.json :request
+      t.json :receipt
+      t.text :payment_request
+      t.bigint :amount
+
+      t.timestamps
+    end
+  end
+end