refactor(dash): [PKG-DASH-04] migrate strict TypeScript and compatible declarations

refactor/fixtures/consumers/dash-control-legacy.ts

@@ -0,0 +1,12 @@
+import Artplayer from 'artplayer'
+import dashControl from 'artplayer-plugin-dash-control'
+
+type OldOption = Parameters<typeof dashControl>[0]
+type OldQuality = NonNullable<OldOption['quality']>
+const options: OldOption = { quality: { control: true, getName: (level: object) => String(level) }, audio: { setting: true } }
+const quality: OldQuality = { title: 'Quality', auto: 'Auto' }
+const formatter: NonNullable<OldQuality['getName']> = value => String(value)
+const art = new Artplayer({ container: '#player', url: 'video.mpd', plugins: [dashControl(options)] })
+const plugin: { name: 'artplayerPluginDashControl', update: () => void } = dashControl({ quality })(art)
+const done: void = plugin.update()
+void [formatter, done]