Add scripts to fetch single or calendar inputs

fetch-calendar

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+for i in $(seq 1 25)
+do
+  ./fetch-input $1 $i $2
+done
+
+

fetch-input

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+OUTPUT=$3/$(seq -f "%02g" $2 $2).txt
+
+curl \
+  -o $OUTPUT \
+  "https://adventofcode.com/$1/day/$2/input" \
+  --compressed \
+  -H "Cookie: session=$AOCTOKEN" \