Add tasks for all the new languages

Task/Hailstone-sequence/Lingo/hailstone-sequence-1.lingo

@@ -0,0 +1,14 @@
+on hailstone (n, sequenceList)
+  len = 1
+  repeat while n<>1
+    if listP(sequenceList) then sequenceList.add(n)
+    if n mod 2 = 0 then
+      n = n / 2
+    else
+      n = 3 * n + 1
+    end if
+    len = len + 1
+  end repeat
+  if listP(sequenceList) then sequenceList.add(n)
+  return len
+end

Task/Hailstone-sequence/Lingo/hailstone-sequence-2.lingo

@@ -0,0 +1,16 @@
+sequenceList = []
+hailstone(27, sequenceList)
+put sequenceList
+-- [27, 82, 41, 124, ... , 8, 4, 2, 1]
+
+n = 0
+maxLen = 0
+repeat with i = 1 to 99999
+  len = hailstone(i)
+  if len>maxLen then
+    n = i
+    maxLen = len
+  end if
+end repeat
+put n, maxLen
+-- 77031 351