Support per-channel configurable Markdown conversion

[burdoto]

This PR adds support for Markdown conversion.

[Yann151924]

The purpose of this pr is to add markdown support directly in minecraft channel ? Or to support markdown text from other source like discord ?

Just to be sure i understand :)

[burdoto]

This is supposed to convert Markdown in ingame Chat messages to Tellraw data; other sources such as Discord for example would imparatively need to parse markdown themselves.
This is part of why I'd like to have a centralized API like #43 in order to move the parser function to the API to yield constant and consistent output per version.

[Yann151924]

Can be good to look to add something like this for the parsing : https://github.com/Vankka/MCDiscordReserializer since it's process markdown from discord :)
It's preferable to add a library for processing/parsing message in order to don't complexify the code in Utils.java

[burdoto]

i agree about the polyfill class.

however; for a couple of things used here (tellraw data, mc format codes and markdown conversion, and even already for rabbitmq connections), i have already collected a couple (and more) utility classes in my common api library
however i didn't add it to the build for a couple of reasons;

• its a large library with a lot of boilerplate that is dormant until used, even introduces some databinding
• its not on mavencentral but instead on my custom repository
• some classes are not finished

i think like you suggested, it would be good having a library for this.
with a long-term refactor, i think that aurionchat can profit a lot from this library; but that would mean a bunch of work ahead.
if you want to go the easy way, it would be the most feasible way to just use this library you already linked.

[Yann151924]

I prefer the "hard way" :D and maybe think about to refactor this part of the code to ease the maintenance of it and the readability .
Or maybe it would be better to add a way for a "plug-in system", so people can had there specific way to handle the parsing of the message itself.