chore: add script to install zsh for devbox (#439)

Author: guocuimi

tools/install_zsh.sh

@@ -0,0 +1,49 @@
+#/usr/bin/env sh
+# This script installs zsh and oh-my-zsh, and sets up the powerlevel10k theme
+# and some plugins. It also modifies the ~/.zshrc file to use the powerlevel10k theme
+# and adds some key bindings for zsh-autosuggestions.
+# Usage: curl -fsSL https://raw.githubusercontent.com/vectorch-ai/ScaleLLM/main/tools/install_zsh.sh | sh
+
+GREEN=$(echo -en '\033[00;32m')
+RESTORE=$(echo -en '\033[0m')
+
+echo "Installing zsh"
+sudo apt install -y zsh
+echo "zsh is now installed"
+
+echo "Installing oh-my-zsh"
+curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh | sh
+
+echo "Installing powerlevel10k theme"
+git clone --depth=1 https://github.com/romkatv/powerlevel10k.git ${ZSH_CUSTOM:-$HOME/.oh-my-zsh/custom}/themes/powerlevel10k
+echo "Theme powerlevel10k installed"
+
+echo "Modifying ~/.zshrc to use powerlevel10k"
+sed -i 's+ZSH_THEME="robbyrussell"+ZSH_THEME="powerlevel10k/powerlevel10k"+' ~/.zshrc
+
+echo "Continuing with plugins"
+git clone https://github.com/zsh-users/zsh-autosuggestions.git ${ZSH_CUSTOM:-$HOME/.oh-my-zsh/custom}/plugins/zsh-autosuggestions
+echo "Plugin zsh-autosuggestions installed"
+
+git clone https://github.com/zsh-users/zsh-syntax-highlighting.git ${ZSH_CUSTOM:-$HOME/.oh-my-zsh/custom}/plugins/zsh-syntax-highlighting
+echo "Plugin zsh-syntax-highlighting installed"
+
+git clone https://github.com/MichaelAquilina/zsh-you-should-use.git ${ZSH_CUSTOM:-$HOME/.oh-my-zsh/custom}/plugins/you-should-use
+echo "Plugin you-should-use installed"
+
+echo "Add the plugins to the plugins array in ~/.zshrc"
+sed -i "s+plugins=(git+plugins=(git zsh-autosuggestions zsh-syntax-highlighting you-should-use npm kubectl web-search copyfile+" ~/.zshrc
+
+echo "Adding key bindings to ~/.zshrc"
+cat <<EOT >> ~/.zshrc
+# Key bindings for zsh-autosuggestions
+bindkey '^I'   complete-word       # tab          | complete
+bindkey '^[[Z' autosuggest-accept  # shift + tab  | autosuggest
+EOT
+
+echo "Changing default shell to zsh"
+sudo chsh -s $(which zsh) $(whoami)
+
+exec zsh
+# the powerlevel10k config should launch at this point.
+# To customize prompt, run `p10k configure` or edit ~/.p10k.zsh.