Revert "no split export"

This reverts commit e106b522.

index.ts

-export * from './src/decorators';
+// export * from './src/decorators';
 export * from './src/def';
 export * from './src/plugin-def';
 export * from './src/registrar';

tests/on-apply.spec.ts

-import { Apply, Inject, Provide } from '../src/decorators';
+import { Inject, Provide } from '../src/decorators';
 import { DefinePlugin, StarterPlugin } from './utility/decorators';
 import { LifecycleEvents } from '../src/plugin-def';
 import { Context } from 'cordis';
@@ -23,9 +23,6 @@ class NonImmediateDependency extends StarterPlugin() {}
 @Provide('myPlugin', { immediate: true })
 @DefinePlugin()
 class TestingBase extends StarterPlugin() implements LifecycleEvents {
-  @Apply()
-  onApply2() {}
-
   onApply() {
     this.applied = true;
   }