perf(core): 去除加载插件对getPackageArchiveInfo的依赖#731
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通过PluginClassLoader新增方法loadPluginManifest可加载该类。 Tencent#696
由于PackageManager.getPackageArchiveInfo方法在解析较大的Manifest时速度很慢， 而且加载插件过程中只依赖很少量的字段，如className，theme等，所以在主路径不再依赖它， 而是依赖编译期生成好的PluginManifest类。 另一原因是getPackageArchiveInfo的返回类型没有公开API告诉我们Receiver的action字段。 在插件代码主动通过PackageManager获取信息时，再依赖getPackageArchiveInfo方法 获取MetaData等插件框架本身不需要的信息。 close Tencent#696
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由于PackageManager.getPackageArchiveInfo方法在解析较大的Manifest时速度很慢，
而且加载插件过程中只依赖很少量的字段，如className，theme等，所以在主路径不再依赖它，
而是依赖编译期生成好的PluginManifest类。
另一原因是getPackageArchiveInfo的返回类型没有公开API告诉我们Receiver的action字段。
在插件代码主动通过PackageManager获取信息时，再依赖getPackageArchiveInfo方法
获取MetaData等插件框架本身不需要的信息。
close #696