Cleanup content loading

package-lock.json

package.json

src/App.tsx

src/api/ApiClient.ts

src/api/ApiClientContext.ts

src/api/ApiEndpointContext.ts

src/api/hooks.ts

src/api/queries.ts

src/index.tsx

src/routes/ContentRoute.tsx

src/routes/main/MainPage.tsx

src/routes/main/MediaEntry.tsx

src/routes/main/MediaEpisode.tsx

src/routes/player/Player.tsx

src/routes/player/video/DashVideoElement.tsx

src/routes/player/video/PlayerApi.ts

src/routes/player/video/RawVideoElement.tsx

src/util/media/usePaused.ts

src/util/parseUrl.ts