Danilo Guanabara

1. Rename project name from Openlimits to OpenLimits

WIP. This PR adds support for Huobi exchange and it moves existing objects in `openlimits` to two other crates below it called `messaging` and `exchange`.

We want to use the automatic binding generator to generate OpenLimits-Java

This issue depends on #177. It can make use of the header of the C binding.

This is a good starting point because most languages can make use of the generated static or dynamic libraries.

We want to automatize the binding generators.

We want to simplify the project and create a binding generator for the supported programming languages.

We want to make it possible to have all the exchanges API endpoints configurable with default values in case the config value isn't present. All the endpoints are hardcoded, and...