chore(nvim): add vim-one, vim-arrows, ale, eslint plugins
chore(nvim): add vim-one, vim-arrows, ale, eslint plugins

This patch adds a bunch of plugin to neovim.

- vim-one: theme
- vim-arrows: easily resize splits with arrows
- ale: asynchronous linter engine
- eslint: eslint linter
- vimux: trigger vim command in tmux panes

anchnk/dotfiles,anchnk/dotfiles,anchnk/dotfiles