Installs p10k + zsh for iterm2

p10k installation

# Install iTerm2 (if not installed manually)
# Download from: https://iterm2.com/downloads.html

# Install zsh (if not installed)
brew install zsh

# Make zsh the default shell
chsh -s $(which zsh)

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

# Install Powerlevel10k theme
git clone --depth=1 https://github.com/romkatv/powerlevel10k.git ${ZSH_CUSTOM:-$HOME/.oh-my-zsh/custom}/themes/powerlevel10k

# Set Powerlevel10k as the default theme in .zshrc
sed -i '' 's/ZSH_THEME=".*"/ZSH_THEME="powerlevel10k\/powerlevel10k"/g' ~/.zshrc

# Apply changes
source ~/.zshrc

# Launch Powerlevel10k configuration
p10k configure