Conmon should support Fluentd Forward as a logging driver

To become more in line with docker features, conmon should support fluentd log driver.

I have some code I have been toying with and willing to create a PR, but I wanted to know approach would acceptable for this repo.

1. Completely hand rolled implementation of the forward protocol.

2. Use a library for the protocol but manage the sockets and connection ourselves.

3. Use the fluent-bit library.

For approaches 2 and 3, what canonical way of adding libraries to this project?

And it has been a long time since I wrote c, so I will need some guidance on this project's practices.