<p>Provide a way to capture addons purchases against Lifetime purchases. </p><p>ex: Pabbly LTD account - 100$ addon 29$ to capture additional purchases. </p><ol><li>We will add a button inside of the sub screen "Addon"</li><li>This addon when pressed will be copy the existing details of the sub and creating a new one. </li><li>The new addon will reference this sub and can be a one time or recurring in nature. </li><li>Introduce new field "Sub_addon" and another field to capture the reference sub id. </li><li>When sub is deleted, Addons will be also deleted.</li><li style="box-sizing:inherit">When sub is Cancelled, Addons will be also cancelled, addons can be deleted or cancelled individually. </li><li> Add a new Label "Addon" to show for the subs. </li><li>An LTD can have a Sub addons and Vice Versa. </li><li>Adapt import/export feature with this addon feature. </li><li>Combine this feature with https://app.productstash.io/subshero?card=61da653e49fcc4002a4be5cc</li></ol>