refactor(core): [CORE-21] generate compatible public and editor declarations

packages/artplayer/public/runtime/plugin.ts

@@ -0,0 +1,13 @@
+export type PluginFactory<Host, Result = unknown> = (this: Host, art: Host) => Result
+
+export type PluginRegistration<Result, Registry>
+  = unknown extends Result ? Registry | Promise<Registry>
+    : Result extends Promise<unknown> ? Promise<Registry> : Registry
+
+/** The same registry is returned immediately or after its Promise factory settles. */
+export interface Plugins<Host> {
+  art: Host
+  id: number
+  add: <Result>(plugin: PluginFactory<Host, Result>) => PluginRegistration<Result, this>
+  next: (plugin: PluginFactory<Host>, result: unknown) => this
+}