finish MockPuppet

[redmaple1]

1. finish MockPuppet
2. add test method for say with mention list and fix some bugs in this case.
3. fix typo. Change ContractGender to ContactGender.
4. add PuppetManager to support custom puppet implementation.

old:

private fun initPuppet() {
      this.puppet = GrpcPuppet(puppetOptions)
      initPuppetEventBridge(puppet)
}

now:

private fun initPuppet() {
      this.puppet = PuppetManager.resolveInstance(wechatyOptions).get()
      initPuppetEventBridge(puppet)
}

[diaozxin007]

尝试使用反射技术来加载，如果有第三个 puppet 还需要修改代码。

[diaozxin007]

尝试使用反射，或者 kotlin 的委托 https://www.kotlincn.net/docs/reference/delegation.html 来解决 puppet 的加载问题