Feature: Create regex property

[razasaeed]

Create a property called "omniRegex" where, for instance, if a user enters a phone number, the input should be validated and, if the input is invalid, the edittext borders should turn red and an error message stating "The input is invalid" should be visible below the edittext.

Example test case:
app:omniRegex="(\+\d( )?)?([-\( ]\d{3}[-\) ])( )?\d{3}-\d{4}"