feat: simplify podcast page's layout for better ux

app/Config/Routes.php

app/Controllers/PodcastController.php

app/Helpers/page_helper.php

app/Language/en/Podcast.php

app/Language/fr/Podcast.php

tailwind.config.js

themes/cp_app/_admin_navbar.php

themes/cp_app/_layout.php

themes/cp_app/home.php

themes/cp_app/map.php

themes/cp_app/page.php

themes/cp_app/podcast/_layout copy.php

themes/cp_app/podcast/_layout.php

themes/cp_app/podcast/_layout_authenticated.php

themes/cp_app/podcast/about.php

themes/cp_app/podcast/activity.php

themes/cp_app/podcast/episodes.php