Ensure there are at least two maintainers of package

[kotval]

Description

Since vim vixen was broken with dark mode for several months (see ueokande/vim-vixen#1437 (comment)), it would be nice to have multiple maintainers who could complete pull requests and make releases. The community diagnosed the problem quickly in that case, but to actually use the fix, it required users people to learn how to make their own extensions and laboriously load them on each computer they use. To get around this, there was an unnecessary fork (vim-vix-remix/vim-vix-remix#4) made by people who just wanted to distribute the new change, but the context switch of setting up a new project made it hard for people to continue. I personally ended up stopping to use the extension all together which made me sad, since it was a quite nice extension.

I don't mean this to sound accusatory. I appreciate all your hard work, and definitely don't expect you to respond in any given time frame since you do this all for free, but I think that since there is a fairly large user base for extensions like these, it'd be nice to have some redundancy in the development process. I am willing to volunteer to be an assistant maintainer since I intend to use this new extension, and feel up to the task. Let me know if you are interested.

[kotval]

After further thought. I suggest transferring this repository to a github organization to facilitate having multiple maintainers. https://docs.github.com/en/organizations/collaborating-with-groups-in-organizations/about-organizations