Support multiple widgets and multiple auto-responder rules per blueprint package

Description:

For most blueprint types (form, campaign, AI prompt), one template per client is sufficient. But for widgets and auto-responder rules, agencies routinely need more than one per client.

Widgets: EMR offers a wide variety of widget styles, but clients rarely explore them because setting up each one manually is time-consuming. It would be extremely valuable to select multiple widget templates in a single blueprint package, one per style, all pre-configured with the client's branding. When the blueprint runs, the client's account would be populated with all widget variants ready to use. They could immediately see the visual differences and pick whichever fits their needs, with zero additional setup.

Auto-responder rules: A standard setup typically requires two rules: one for positive reviews (auto-reply, no approval needed) and one for negative reviews (reply held for manual approval before sending). Currently only one auto-responder rule can be selected per package, which means the second rule always has to be added manually after onboarding.

Request: Allow selecting multiple widgets and multiple auto-responder rules within a single blueprint package.