There's a closed pull request on the void-packages repository

Partially revert "srcpkgs/*: remove all cryptocurrency/blockchain packages"
https://github.com/void-linux/void-packages/pull/44778

Description:
I kind of hate how #44422 went down. No attempt was made to find some sort of middle ground and I wasn't able to find any sort of discussion about it. Maybe we can make up for it now.

I reverted #44422 and split it in single commits per package. If someone were to step up and take over maintenance of a package, I can revert that removal easily. But I will only do that if someone is willing to maintain a package and someone from @void-linux/pkg-committers signals support.

I'll take the first step and say I'm willing to oversee `bitcoin` and maybe `electrum`, if @ar-jan  and @damadmai (or someone else) are interested. (Which is why I left these packages in and did not add commits for them). I could probably be convinced to also oversee `go-ethereum`, since that template seems to be straight forward for now.

There are a couple of packages that were abandoned from upstream or I wasn't able to find any pull requests for, so I think they can go. I also think that we don't need to ship any miners, since at this point, it's mostly special purpose software and is probably best built directly from upstream. I also wouldn't be opposed to add the last bit to our package requirements.

Here's list of people that I was able to find that last touched some of the removed packages, so they know what's going on, or can leave comment:
 
namecoin: @Chocimier @mobinmob 
litecoin: @ahesford @ndowens 
monero: @kevcrumb @Hoshpak 
monero-gui: @kevcrumb @Hoshpak 
go-ethereum: @sihoang
bitcoin: @damadmai @unspecd  #44133
Electron-Cash: @ar-jan  #43702
electrum: @ar-jan  #43702

If this is left without any meaningful feedback for about a month, I'll close this as is. And since this is potentially a highly polarizing topic, I feel I have to ask everyone to keep it civilized in advance.

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