ActivityLifecycleCallbacks相关的基本生命周期方法未对外暴露

### Environment
- [x] Autosize Version:1.2.1
- [x] Target Android Version:14
- [x] Device Model:
- [x] Device Resolution:
- [x] Design Size On AndroidManifest:

### Bug Description:

看过源码，发现框架使用Application.registerActivityLifecycleCallbacks来监听Activity的生命周期，但并没有对外暴露基本的生命周期方法，导致如果使用了该框架但也需要监听Activity生命周期的应用场景时，会无从下手，作者是否可以做一些补充呢

### Log:

```log

```

### Screenshot

### Related Code:
```java
/*
* Copyright 2018 JessYan
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package me.jessyan.autosize;

import android.app.Activity;
import android.app.Application;
import android.os.Bundle;

import static me.jessyan.autosize.AutoSizeConfig.DEPENDENCY_ANDROIDX;
import static me.jessyan.autosize.AutoSizeConfig.DEPENDENCY_SUPPORT;

/**
* ================================================
* {@link ActivityLifecycleCallbacksImpl} 可用来代替在 BaseActivity 中加入适配代码的传统方式
* {@link ActivityLifecycleCallbacksImpl} 这种方案类似于 AOP, 面向接口, 侵入性低, 方便统一管理, 扩展性强, 并且也支持适配三方库的 {@link Activity}
*

* Created by JessYan on 2018/8/8 14:32
* Contact me
* Follow me
* ================================================
*/
public class ActivityLifecycleCallbacksImpl implements Application.ActivityLifecycleCallbacks {
/**
* 屏幕适配逻辑策略类
*/
private AutoAdaptStrategy mAutoAdaptStrategy;
/**
* 让 Fragment 支持自定义适配参数
*/
private FragmentLifecycleCallbacksImpl mFragmentLifecycleCallbacks;
private FragmentLifecycleCallbacksImplToAndroidx mFragmentLifecycleCallbacksToAndroidx;

public ActivityLifecycleCallbacksImpl(AutoAdaptStrategy autoAdaptStrategy) {
if (DEPENDENCY_ANDROIDX) {
mFragmentLifecycleCallbacksToAndroidx = new FragmentLifecycleCallbacksImplToAndroidx(autoAdaptStrategy);
} else if (DEPENDENCY_SUPPORT){
mFragmentLifecycleCallbacks = new FragmentLifecycleCallbacksImpl(autoAdaptStrategy);
}
mAutoAdaptStrategy = autoAdaptStrategy;
}

@Override
public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
if (AutoSizeConfig.getInstance().isCustomFragment()) {
if (mFragmentLifecycleCallbacksToAndroidx != null && activity instanceof androidx.fragment.app.FragmentActivity) {
((androidx.fragment.app.FragmentActivity) activity).getSupportFragmentManager().registerFragmentLifecycleCallbacks(mFragmentLifecycleCallbacksToAndroidx, true);
} else if (mFragmentLifecycleCallbacks != null && activity instanceof android.support.v4.app.FragmentActivity) {
((android.support.v4.app.FragmentActivity) activity).getSupportFragmentManager().registerFragmentLifecycleCallbacks(mFragmentLifecycleCallbacks, true);
}
}

//Activity 中的 setContentView(View) 一定要在 super.onCreate(Bundle); 之后执行
if (mAutoAdaptStrategy != null) {
mAutoAdaptStrategy.applyAdapt(activity, activity);
}
}

@Override
public void onActivityStarted(Activity activity) {
if (mAutoAdaptStrategy != null) {
mAutoAdaptStrategy.applyAdapt(activity, activity);
}
}

@Override
public void onActivityResumed(Activity activity) {

}

@Override
public void onActivityPaused(Activity activity) {

}

@Override
public void onActivityStopped(Activity activity) {

}

@Override
public void onActivitySaveInstanceState(Activity activity, Bundle outState) {

}

@Override
public void onActivityDestroyed(Activity activity) {

}

/**
* 设置屏幕适配逻辑策略类
*
* @param autoAdaptStrategy {@link AutoAdaptStrategy}
*/
public void setAutoAdaptStrategy(AutoAdaptStrategy autoAdaptStrategy) {
mAutoAdaptStrategy = autoAdaptStrategy;
if (mFragmentLifecycleCallbacksToAndroidx != null) {
mFragmentLifecycleCallbacksToAndroidx.setAutoAdaptStrategy(autoAdaptStrategy);
} else if (mFragmentLifecycleCallbacks != null) {
mFragmentLifecycleCallbacks.setAutoAdaptStrategy(autoAdaptStrategy);
}
}
}

```

### Others: