dxp/issues#984: add and handle the show_loading config
changes
- add and handle show_loading new config
- when true, the loading param will be set to true so the qa-wrapper gets the state and shows the loader
- when false the loading param will not be passed
test
- run the app locally
- check that only the results are showing the loading bar when searching
- add show_loading to the input element in the
elements.ts
file, check that it also shows the loader now - play with the param if wanted to check for possible edge cases