input: Write a python function to reverse each string in a list and return a dictionary with the reversed strings as keys and the original strings as values.
  assert reverseStrings(["Hello", "World"]) == {'olleH': 'Hello', 'dlroW': 'World'}
  assert reverseStrings(["abc", "def", "ghi"]) == {'cba': 'abc', 'fed': 'def', 'ihg': 'ghi'}
  assert reverseStrings(["Python", "Coding"]) == {'nohtyP': 'Python', 'gnidoC': 'Coding'}
output: def reverseStrings(strings):
      return {s[::-1]: s for s in strings}