puppet-whatsapp should support location messages

[hcfw007]

We have location message support on xiaoju-bot and wechaty-forked, we should support location message on puppet-whatsapp.

Base on whatsapp-web.js doc, whatsapp-web.js have full support on location messages sending, however whatsapp official webapp does not supoort location meesage sending.

After some test, we can send location message via whatsapp-web.js, however the receive will reject the mssage (the location message will never get the second √ mark.
Location message receiving is eazy to implement. Whatsapp-web.js will provide coordination info.