Add a general development channel for the discord

[Sayrbee]

I think a general development channel in the development tab could help. So that people of all aspects of development (coding,spriting,mapping,etc) could talk about what needs to get done on the server and what they could do together to speed things along (ideally).

For example:

With the "ss13 related" tab, there's "space station_13" which people use as a general talking area. But the "post_round_talk" channel for specific talk about each round. I would think of the development general channel like the "spacestation_13" channel of development and the other channels such as "coding_chat","spriting", and "mapping" are something like the "post_round_talk" channel.