Add tasks for all the new languages

Task/Factorial/ChucK/factorial-1.chuck

@@ -0,0 +1,10 @@
+0 => int total;
+fun int factorial(int i)
+{
+    if (i == 0) return 1;
+    else
+    {
+        i * factorial(i - 1) => total;
+    }
+    return total;
+}

Task/Factorial/ChucK/factorial-2.chuck

@@ -0,0 +1,10 @@
+1 => int total;
+fun int factorial(int i)
+{
+    while(i > 0)
+    {
+        total * i => total;
+        1 -=> i;
+    }
+    return total;
+}