V87: Add Catalogue tables.

Creates the six tables needed by the PhoenixKitCatalogue module:

• phoenix_kit_cat_manufacturers — manufacturer directory
• phoenix_kit_cat_suppliers — supplier directory
• phoenix_kit_cat_manufacturer_suppliers — many-to-many join
• phoenix_kit_cat_catalogues — top-level catalogue groupings
• phoenix_kit_cat_categories — subdivisions within a catalogue
• phoenix_kit_cat_items — individual products/materials