Regular expression input validation capability for parameters

[erikgraa]

I have added a functioning MVP for input validation in the form of a "pattern" attribute for types text, user-fullname and user-email

Example:

<parameter name='ModuleName' type='text' prompt='Enter the name of the module' pattern='^[\w\.\-_]+$'/>
<parameter name='ModuleDesc' type='text' prompt='Enter a description of the module (required for publishing to the PowerShell Gallery)' pattern='^[\w\s]+\.?$'/>
<parameter name='Version' type='text' default='1.0.0' prompt='Enter the version number for the module (must adhere to PowerShell versioning conventions)' pattern='^\d+\.\d+(\.\d+)?(\.\d+)?$'/>

If one e.g. inputs 1.0. or 1.0.0.0.0 as the version, the user will be prompted again until valid input. Good examples must be supplied.