Write code of conduct

[aaltat]

We should have code of conduct, see more in here: https://help.github.com/en/articles/adding-a-code-of-conduct-to-your-project

[pekkaklarck]

Also RF core would need this.

[aaltat]

Let's do it together then. Has this been discussed in the RF foundation? Any recommendations?

[pekkaklarck]

Yeah, this was briefly discussed at some point. Ping @IsNoGood.