Consider support for extending native generic classes and providing generic arguments

Currently, there is no way to implement for example java.util.List<T> and provide information what would be the type T. When extending such class/interface from TypeScript the following way:

@Interfaces([java.util.List])
class JSList implements java.util.List {
}

the static binding generator prior 5.3.1 would generate a proxy class with a similar signature:
public class JSList implements java.util.List
The introduced changes of the SBG in 5.3.1 generate public class JSList implements java.util.List<Object> having resolved the generic parameter T using its erasure (in this case java.lang.Object) as if it's a raw class inheritance.

With the changes of the SBG in 5.3.1, there is a way to feed it information about what would be the generic parameters when extending, however this would require some changes in the syntax of extending/implementing native classes:

@Native
class JSList implements java.util.List<java.lang.Integer>{
}

The above shown syntax would be possible with some changes in the webpack plugin and the js_parser.js in the SBG.
In order to collect information about the generic arguments provided in the TS code there should be a custom transformer plugged into the webpack pipeline whose goal would be to lookup every TS node with a @Native decorator and preserve its extended class and implemented interfaces information somewhere. This could be stored by modifying the AST and creating internal decorators only for storage. Further, when the js_parser.js parses the JS code, it can look for the internal decorators and retrieve the information about the generics storing them for the SBG.

从 issue 中描述的 webpack plugin 和 js_parser.js 开始。跟踪当前如何表示 @Native 声明以及扩展或实现的类型，然后确定自定义 transformer 如何为 parser 保留泛型参数。完成标准是：诸如 java.util.List<java.lang.Integer> 这样的 TypeScript 能生成带有该泛型参数的 binding，而不是 Object。