add setup flow files

resources/frontend_client/app/css/core/grid.css

resources/frontend_client/app/css/setup.css

.../frontend_client/app/setup/partials/_connection_list.html

.../frontend_client/app/setup/partials/_connection_type.html

resources/frontend_client/app/setup/partials/_header.html

...rces/frontend_client/app/setup/partials/_step_button.html

resources/frontend_client/app/setup/setup.app.js

resources/frontend_client/app/setup/setup.controllers.js

resources/frontend_client/app/setup/setup.directives.js

resources/frontend_client/app/setup/setup.module.js

resources/frontend_client/app/setup/setup.services.js

resources/frontend_client/app/setup/setup_connection.html

resources/frontend_client/app/setup/setup_data.html

resources/frontend_client/app/setup/setup_entities.html

resources/frontend_client/app/setup/setup_ingestion.html

resources/frontend_client/app/setup/setup_intro.html

resources/frontend_client/app/setup/setup_profile.html

resources/frontend_client/app/setup/setup_team.html