Utils: add small script to select language

utils/language.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+echo "Choose langage: 1 (english), 2 (french), 3 (spanish)"
+for song in songs/*/*.sg; do
+    echo "Apply language to $song ?"
+    read answer
+    case "$answer" in
+	1)
+	    sed -i '1i\\\\selectlanguage{english}' $song
+	    ;;
+	2)
+	    sed -i '1i\\\\selectlanguage{french}' $song
+	    ;;
+	3)
+	    sed -i '1i\\\\selectlanguage{spanish}' $song
+	    ;;
+    esac
+done;