Create ClayMultiSelect Component

[matuzalemsteles]

Initial implementation

• Send API Proposal Fixes #1285 - API proposal to ClayLabelsInputField component #1292
• Send final component Fixes #1285, #1341, #1330 - Create ClayMultiSelector, ClayDataProvider and ClayAutocomplete #1351

[matuzalemsteles]

hey @victorvalle, The navigation between the labels is not clear to me yet. Just leaving a few points here.

• Can I remove the label when navigating the arrows?
• When to remove the label where the focus should be? on the label before it was removed? in input?
• When navigation occurs by arrows can I remove the label by pressing backspace or enter?

[victorvalle]

• Can I remove the label when navigating with the arrows?
  Yes
• When to remove the label where the focus should be? on the label before it was removed? in input?
  in the input
• When navigation occurs by arrows can I remove the label by pressing backspace or enter?
  both