Support Custom Social Preview Metadata for Payment Links and Storefronts

Description:

Currently, when merchants share a Dodo Payment Link or Storefront on social platforms such as Threads, X, Facebook, or LinkedIn, the link displays the default Dodo social preview.

Add support for custom social preview metadata (Open Graph and Twitter Card tags) so merchants can configure:

• Custom preview title
• Custom preview description
• Custom preview image (product, storefront banner, or brand logo)

When someone shares the link, social platforms should render the configured metadata instead of the default Dodo preview.