Add 2021 solutions

fetch.sh

@@ -8,13 +8,9 @@ fi
 list=$(find -name "Day*.cpp" | awk -F '/' '{print $3 "/" $4}' | awk -F '.' '{print $1}' | sed 's/Day//g' | sort)
 
 for item in $list; do
-    echo $item
     year=$(echo $item | awk -F '/' '{print $1}')
     day=$(echo $item | awk -F '/' '{print $2}')
-    echo "year: $year"
-    echo "day: $day"
     dir="res/$year/day$day/input.txt"
-    echo $dir
     if [ ! -e $dir ]; then
         webitem=$(echo $day | sed 's/^0//g')
         echo "Fetching $dir"