ISTWCMS-6273: adding layout builder browser for catalog item list

config/install/layout_builder_browser.layout_builder_browser_block.uw_lbb_catalog_item_list.yml

+langcode: en
+status: true
+dependencies: {  }
+id: uw_lbb_catalog_item_list
+block_id: uw_cbl_catalog_item_listing
+category: uw_bc_listings
+label: 'Catalog item list'
+image_path: images/layout_builder_browser/catalogitemlist.svg
+image_path_base: 'theme:uw_fdsu_theme_resp'
+image_alt: 'Catalog item list'
+weight: 0