feat(api): add rest api with podcasts read endpoints

.env.example

.gitlab-ci.yml

app/Config/Autoload.php

app/Config/Filters.php

app/Database/Seeds/FakeSinglePodcastApiSeeder.php

modules/Api/Rest/V1/Config/Api.php

modules/Api/Rest/V1/Config/Routes.php

modules/Api/Rest/V1/Config/Services.php

modules/Api/Rest/V1/Controllers/ExceptionController.php

modules/Api/Rest/V1/Controllers/PodcastController.php

modules/Api/Rest/V1/Core/Exceptions.php

modules/Api/Rest/V1/Filters/ApiFilter.php

modules/Api/Rest/V1/podcast.json

phpunit.xml.dist

tests/modules/Api/Rest/V1/PodcastTest.php