[Feature request] Add the step attribute to the TextInput element

[helloyanis]

Currently, the step attribute to allow you to set decimal values in a TextField of type number is not supported. I think

  <mdui-text-field label="Text Field" type="number" step="any"></mdui-text-field>

should allow you to input a decimal number, but it seems to fail.

Step attribute documentation : https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/step