Add fisher plugin manager

fish.sh

@@ -6,7 +6,7 @@ if [ "$1" = "--skip-watermark" ]; then
 fi
 
 if [ "$skip_watermark" = false ]; then
-echo '
+  echo '
      ____                _       _       _       _ _
     | __ ) _   _    __ _| |_   _(_)_ __ | | ___ | | | ___
     |  _ \| | | |  / _  | \ \ / / |  _ \| |/ _ \| | |/ _ \
@@ -40,8 +40,6 @@ if ! command -v zsh >/dev/null && command -v git >/dev/null && command -v curl >
   fi
 fi
 
-fish=$(which fish)
-
 # Clone or pull end-4 dotfiles repository
 if [ -d dots-hyprland ]; then
   cd dots-hyprland && git pull && cd ..
@@ -103,3 +101,8 @@ if [ ! -f "$HOME/.config/hypr/hyprlock/colors.conf" ]; then
   cp configs/hypr/hyprlock/colors.conf "$HOME/.config/hypr/hyprlock/colors.conf"
 fi
 
+# Install Fisher plugin manager for fish shell
+curl -sL https://raw.githubusercontent.com/jorgebucaran/fisher/main/functions/fisher.fish | source && fisher install jorgebucaran/fisher
+
+# Install plugins using Fisher
+fisher install jorgebucaran/nvm.fish