Run chmod +x setup.sh && ./setup.sh or setup manually by using commands below.
(Still have to use perfix + I to fetch tmux plugin manually.)

Zsh

install oh-my-zsh

sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"

set theme

Edit ZSH_THEME= in .zshrc (Using different theme within your host than others is recommended.)

Plugins

zsh-autosuggestions

git clone https://github.com/zsh-users/zsh-autosuggestions ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-autosuggestions

zsh-syntax-highlighting

git clone https://github.com/zsh-users/zsh-syntax-highlighting.git ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/plugins/zsh-syntax-highlighting

activate plugins

Edit plugins=() in .zshrc.
e.g. plugins=(git z zsh-autosuggestions zsh-syntax-highlighting history-substring-search)

Vim

Copy vim/.vimrc to ~.

Tmux

install tpm

git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm

Copy tmux/.tmux.conf to ~.
In tmux session, press the default key binding prefix + I to fetch and install the plugin.