feat(tools): Add powerline-go to mise essential tools

To follow the approach used for the tmux config script.

config.d/screen.bash

@@ -6,7 +6,7 @@ config_dir=${XDG_CONFIG_HOME:-$HOME/.config}/screen
 
 if [[ ! -d "${config_dir}" ]]; then
   git clone "${git_repo}" --branch "${git_branch}" --recursive "${config_dir}"
-  bash "${config_dir}/create-links.bash"
 else
   cd "${config_dir}" && git pull
 fi
+ln -sf "${config_dir}/screenrc" "${HOME}/.screenrc"

tools.d/mise.bash

@@ -17,5 +17,6 @@ test -x ~/.local/bin/mise && eval "$(~/.local/bin/mise activate bash)"
 mise settings set experimental true
 
 # Install some essential tools
-(mise where usage &>/dev/null) || mise use -g usage     # for completion
+(mise where usage &>/dev/null) || mise use -g usage               # for help completion
 (mise where chezmoi &>/dev/null) || mise use -g chezmoi           # to manage dotfiles
+(mise where powerline-go &>/dev/null) || mise use -g powerline-go # for fancy prompt