allow access to ...advices throught function prop

[k1r0s]

when building abstractions you may ship your library with:

export const MyDecorator = beforeMethod(meta => {
  ...stuff that you are not supposed to access
});

would be nice that MyDecorator.advices() gives you back an array of advices which where passed to the join point (beforeMethod on the previous example)

this will be usefull for extending packed decorators that use kaop-ts, for example:

const advices = MyDecorator.advices();
export const MyNewDecorator = beforeMethod(...advices, meta => {
  ...new stuff that happends after advices execution
})