Automatically create PRs of #ETCtweets

[IstoraMandiri]

Given that right now we have to manually copy and patste #ETCtweets from discord, a less effort way would be to set up an automation that creates a PR for each new #ETCtweet automatically, which we can approve or reject or edit as maintainers.

This should make the hashtag more useful, but might spam up the repo.

I think we should try it anyway and play it by ear. Easy enough to turn off if it doesn't work.