Add InputFilter to TextField, TextEditor

Add InputFilter to TextField, TextEditor

Text input filter based on regular expressions.

Add a InputFilter struct to pass data of DALi InputFilter PropertyMap.
The InputFilter struct can be used as an argument to SetInputFilter and GetInputFilter methods.

// example
InputFilter inputFilter;
inputFilter.Accepted = new Regex(@"[\d]");
inputFilter.Rejected = new Regex("[0-3]");

field.SetInputFilter(inputFilter);

field.InputFiltered += (s, e) =>
{
    if (e.Type == InputFilterType.Accept)
    {
        // If input is filtered by InputFilter of Accept type.
    }
    else if (e.Type == InputFilterType.Reject)
    {
        // If input is filtered by InputFilter of Reject type.
    }
};

Signed-off-by: Bowon Ryu <bowon.ryu@samsung.com>