form-o-mat: Generate and validate Web forms with few functions

This class is meant to generate and validate HTML forms using a few functions to define inputs, load and validate the submitted values, and output the form.

The class lets the developer define individual form inputs or inputs that usually are added in logical groups like groups of radio buttons or checkboxes.

When the form inputs are added to the form composition the class already loads and validates the input values that may have been submitted and generates the HTML for each form input.

Once the form is fully composed, the developers just needs to call one function to output the form HTML.