feat: 新增Native插件管理

Signed-off-by: MiaoWoo <admin@yumc.pw>

packages/nukkit/src/plugin.ts

@@ -0,0 +1,12 @@
+import { server } from '@ccms/api'
+
+let Nukkit: cn.nukkit.Server = base.getInstance().getServer()
+
+export class NukkitNativePluginManager extends server.NativePluginManager {
+    has(name: string) {
+        return !!this.get(name)
+    }
+    get(name: string) {
+        return Nukkit.getPluginManager().getPlugin(name)
+    }
+}