Add Shopify Product Metafields

I need new metafields added to my Shopify store to enhance the product filters. These metafields should include Price, Availability, Product Type (matching the collection the product belongs to, with the option for multiple associations), Material (allowing multiple entries), Color (added by color code and supporting multiple colors), and Size (with multiple options allowed). These will apply to all products in my store.

I’ll handle filling in the values for each product later; I just need the metafields set up correctly so they display properly in the filters.