Use Language Server Protocol for interface

[vladdu]

https://github.com/Microsoft/language-server-protocol

It looks like more and more tools start to use this, no need to reinvent the wheel.

[joelreymont]

@vladdu Assuming I were to implement the above, would you hook it up to Eclipse?

[vladdu]

Hi! I already have started to implement this in a private branch (vladdu/erlide_kernel, branch "db", still quite volatile content), maybe we can push together to get it ready? Yes, I will make it work with Eclipse, of course.