ISTWCMS-4569: adding new code twitter block to LBB

config/install/layout_builder_browser.layout_builder_browser_block.uw_lbb_twitter.yml

+langcode: en
+status: true
+dependencies: {  }
+id: uw_lbb_twitter
+block_id: uw_cbl_twitter
+category: uw_bc_external_embeds
+label: Twitter
+weight: -4
+image_path: /profiles/uw_base_profile/themes/uw_fdsu_theme_resp/images/layout_builder_browser/twitter.svg
+image_alt: ''