refactor(core): CORE-08 type plugin registration and guard closed instances

test/types/plugins-source.ts

@@ -0,0 +1,21 @@
+import type { PluginFactory, PluginHost } from '../../packages/artplayer/src/plugins/types'
+import Plugins from '../../packages/artplayer/src/plugins'
+
+interface Host extends PluginHost<Host> {
+  id: number
+}
+declare const host: Host
+const registry = new Plugins(host)
+const sync: typeof registry = registry.add(function (art) {
+  const id: number = this.id + art.id
+  return { name: 'sync', id }
+})
+const asyncResult: Promise<typeof registry> = registry.add(async () => ({ name: 'async' }))
+const mixed: typeof registry | Promise<typeof registry> = registry.add(() => Math.random() ? Promise.resolve(1) : 1)
+const untyped: PluginFactory<Host> = () => null
+const unknown: typeof registry | Promise<typeof registry> = registry.add(untyped)
+// @ts-expect-error Synchronous plugins do not always return a Promise.
+const bad: Promise<typeof registry> = registry.add(() => ({ name: 'sync' }))
+// @ts-expect-error The factory receiver and argument must match the actual host.
+registry.add((art: { incompatible: string }) => art)
+void [sync, asyncResult, mixed, unknown, bad]