Added WP Grid Builder plugin stack

Property	Value
description	Installed the baseline filtering stack for starter facets and Bricks integration.

• Installed WP Grid Builder 2.3.2.
• Installed WP Grid Builder - Bricks 1.3.5.
• Activated the core grid-builder license with the key kept redacted.
• Shipped the baseline with facet filtering and Bricks integration already present.