refact: initial context config implementation

src/cards/CategoryCard.svelte

src/cards/EpisodeCardBig.svelte

src/cards/EpisodeCardSmall.svelte

src/cards/HostCardAvatar.svelte

src/cards/HostCardBig.svelte

src/cards/NowPlayingCard.svelte

src/cards/ShowCardBig.svelte

src/cards/ShowCardMedium.svelte

src/cards/ShowCardSmall.svelte

src/cards/TimeslotCard.svelte

src/components/CategoryList.svelte

src/components/EpisodeDetail.svelte

src/components/HostDetail.svelte

src/components/HostList.svelte

src/components/MediaPlayer.svelte

src/components/NowPlayingWidget.svelte

src/components/Player.svelte

src/components/Programme.svelte

src/components/ShowDetail.svelte

src/components/ShowList.svelte