Add tasks for all the new languages

Task/Reverse-a-string/Lingo/reverse-a-string-1.lingo

@@ -0,0 +1,7 @@
+on reverse (str)
+  res = ""
+  repeat with i = str.length down to 1
+    put str.char[i] after res
+  end repeat
+  return res
+end

Task/Reverse-a-string/Lingo/reverse-a-string-2.lingo

@@ -0,0 +1,8 @@
+on reverseBytes (str)
+  ba = byteArray(str)
+  res = byteArray()
+  repeat with i = ba.length down to 1
+    res[res.length+1] = ba[i]
+  end repeat
+  return res
+end