GRIN stack exchange community proposal

[marekyggdrasil]

Screenshot below.

I will be happy to implement requested changes!

[phyro]

@marekyggdrasil I personally agree that a stackoverflow for Grin would be a good thing to have and would contribute to answers myself, but it seems like there was no activity (example questions) for over a week on the Grin stackexchange. I think it would be a good idea to at least get this proposal active before linking to it from the website to avoid linking to inactive communication channels. That's just my opinion though and I'd also be ok with proceeding with this if others think it's good to do so (and remove later in case it doesn't catch up).