Implement basic seeking

package-lock.json

package.json

src/App.tsx

src/api/ApiClient.ts

src/api/models/Rating.ts

src/api/models/Title.ts

src/api/models/TitleDescription.ts

src/api/models/TitleName.ts

src/api/models/dto/TitleMeta.ts

src/index.tsx

src/routes/TitleRoute.tsx

src/routes/main/MainPage.tsx

src/routes/player/Player.tsx

src/routes/player/PlayerError.tsx

src/routes/player/PlayerLoading.tsx

src/routes/player/PlayerPage.tsx

src/routes/player/PreviewViewer.tsx

src/routes/player/SeekBar.tsx

src/util/CurrentTitleContext.ts

src/util/locale/Locale.ts