Data type and handling options

I've added a handful of options that may be useful to formbuilders everywhere:

• value=xxxxx sets a static value for a form field that cannot be modified by user nor software input
• readonly=true prohibits users from changing settings (but displays dynamic content from the struct)
• header=true on sub-structs causes the form builder to insert a "header" block that can be rendered separate from form fields

When creating your input template, it's possible to use more advanced type= values to bring things into better focus. A more current example template looks like:

{{if eq .Type "hidden"}}
        <input {{with .ID}}id="{{.}}"{{end}} type="{{.Type}}" name="{{.Name}}" value="{{.Value}}"/>
{{else if eq .Type "info"}}
<div>
        <h2>{{.Label}}</h2>
        <p>{{.Footer}}</p>
</div>
{{else if eq .Type "section"}}
<div>
  <div>
        {{if .Label}}{{.Label}}{{else}}{{.Name}}{{end}}
        {{with .Footer}}
                <p class="text-grey-400 pl-8 pt-2 text-xs italic">{{.}}</p>
        {{end}}
  </div>
</div>
{{else if eq .Type "checkbox"}}
<div>
        <input type="checkbox" {{with .ID}}id="{{.}}"{{end}} name="{{.Name}}" placeholder="{{.Placeholder}}" {{with .Value}}checked{{end}}>
          {{.Label}}
        </input>
        {{with .Footer}}
                <i>{{.}}</i>
        {{end}}
</div>
{{else}}
<div>
        <label {{with .ID}}for="{{.}}"{{end}}>
                {{.Label}}
        </label>
        <input {{with .ID}}id="{{.}}"{{end}} type="{{.Type}}" name="{{.Name}}" placeholder="{{.Placeholder}}" {{with .Value}}value="{{.}}"{{end}}/>
        {{with .Footer}}
                <p class="text-grey pt-2 text-xs italic">{{.}}</p>
        {{end}}
</div>
{{end}}