Atomize rule

[rakesh-voiger]

Allow map to auto convert keys passed as strings to atoms.

rules = [
  type: :map,
  atomize: true,
  map: %{
    :key => [type: :string]
  }
]

input = %{"key" => "value"}

assert Validate.validate(input, rules) == success(%{:key => "value"})

• Converts only atom keys defined in the rules
• No impact on the string keys defined in the rules
• When both atom and string is present in the input, priority is given to atom key.