refactor(jassub): [PKG-JASSUB-04] migrate owned TypeScript and preserve public types

refactor/fixtures/implementation/jassub.ts

@@ -0,0 +1,8 @@
+import type Artplayer from 'artplayer'
+import type { RuntimeFactory, RuntimeResult } from '../../../packages/artplayer-plugin-jassub/types/runtime-api.js'
+import factory from '../../../packages/artplayer-plugin-jassub/src'
+
+declare const art: Artplayer
+const registration: RuntimeResult = factory()(art)
+const publicFactory: RuntimeFactory = factory
+export { publicFactory, registration }