Build out the `form-js-render` package

[Skaiir]

Is your feature request related to a problem? Please describe.

As part of the current refactoring project to separate the form-viewer into a renderer and core part. This issue tracks the renderer side.

Describe the solution you'd like

We should have a project that takes a single form representation object and renders it out. We should also provide an easy playground-like interface to test this project with manually.

Breakdown

• [x] Scaffold project
• [x] Create viewer testing environment
• [ ] Make viewer testing environment setValue work
• [x] Implement base renderer module
• [ ] Implement viewer component renderers
  • [x] Elements
  • [x] Children
  • [x] Datepicker
  • [x] Timepicker
  • [x] Calendar
  • [x] DropdownList
  • [x] InputAdorner
  • [x] SkipLink
  • [x] Description
  • [x] Errors
  • [x] FormRoot
  • [x] FormFieldRoot
  • [x] Label
  • [x] PoweredBy
  • [x] EmptyGroup
  • [ ] Fields
  • [x] Default / Form
  • [x] Button
  • [x] Checkbox
  • [x] Checklist
  • [x] Datetime
  • [x] Group
  • [x] Html
  • [x] Iframe
  • [x] Number
  • [x] Radio
  • [x] Select
    • [x] Simple
    • [x] Searchable
  • [x] Separator
  • [x] Spacer
  • [ ] Table
  • [x] Taglist
  • [x] Text
  • [x] Textarea
  • [x] Textfield
• [ ] Implement editor component override renderers
  • [x] Editor Mode
  • [ ] Elements
  • [x] EmptyForm
  • [x] EmptyGroup
  • [ ] Field
    • [x] Selected
    • [x] Hovered (needs to only hover on one element => programmatic)
    • [ ] FieldResizer
  • [ ] Fields
  • [x] EditorExpressionField
  • [x] EditorHtml
  • [x] EditorIFrame
  • [ ] EditorTable
  • [x] EditorText
• [ ] Dynamic lists
• [x] Global readonly
• [ ] Columns
• [ ] RtL carryover
• [ ] Alignment check with the core module
• [ ] (to detail) performance & memoization
• [ ] Merge across all components to v2
• [ ] Migrate over rendering related automated tests from viewer

Describe alternatives you've considered

n/a

Additional context

Root issue: https://github.com/bpmn-io/form-js/issues/1166

[marcosgvieira]

@Skaiir as agreed, let's break the milestones here so it's easier to understand when we target to deliver.

[Skaiir]

On this one, there isn't so much a milestone approach, as there are many small things to tackle. What matters with this part of the issue is that it is done by the time https://github.com/bpmn-io/form-js/issues/1208 is done.