refactor: Update starship.toml file path and add optional icon parameter in setup.sh

setup.sh

@@ -33,17 +33,18 @@ configure_starship() {
 overwrite_starship_toml() {
     local icon="$1"
     local starship_toml_path="./terminal/starship.toml"
+    local destination_path="$HOME/.config/starship.toml"
     
     if [ -f "$starship_toml_path" ]; then
         echo "Overwriting starship.toml..."
-        mkdir -p ~/.config/starship
         
         # Insert icon before hostname if provided
         if [ -n "$icon" ]; then
             sed -i "s/format = \"\"\"/format = \"\"\"\[ $icon \](fg:color_fg0)\\n/" "$starship_toml_path"
         fi
         
-        cp "$starship_toml_path" ~/.config/starship/starship.toml
+        mkdir -p $(dirname "$destination_path")
+        cp "$starship_toml_path" "$destination_path"
     else
         echo "starship.toml not found in the repository."
         exit 1