input: Write a python function to find all indices of a search query in a list.
  assert searchIndex([1, 2, 5, 3, 4], 3) == [3]
  assert searchIndex([1, 2, 5, 3, 4, 3, 3], 3) == [3, 5, 6]
  assert searchIndex([1, 2, 2, 2, 4, 5], 2) == [1, 2, 3]
output: def searchIndex(lst, query):
      return [index for index, value in enumerate(lst) if value == query]