Add Vecty, a Go web framework

[slimsag]

Vecty lets you build responsive and dynamic web frontends in Go using WebAssembly, competing with modern web frameworks like React & VueJS.

Repository: https://github.com/hexops/vecty

Disclaimer: I am the author of Vecty - I saw this page was linked from https://github.com/golang/go/wiki/WebAssembly#other-webassembly-resources and Vecty is fairly popular (~2k stars) so I figured I would contribute it. Not sure if that's allowed, feel free to close if not.

• [x] I've read CONTRIBUTING.md.
• [x] Description explains the issue / use-case resolved, and auto-closes the related issue(s) (https://help.github.com/articles/closing-issues-via-commit-messages/).

[mbasso]

Hi @slimsag, of course, you can contribute. Thank you for opening this PR! I would add Vecty only once in the list, it's better under the Web frameworks-libraries section. Can you please fix it? After that, I would be happy to merge!

[slimsag]

@mbasso done!

[mbasso]

Cool, thank you!