fix: add missing TimeGrid extends chain and full field definitions

[cewert]

Problem

TimeGrid was registered in data.ts with an empty fields array and no extends property. The validator's findAllFields traversal relies on the extends chain to walk up the RSG hierarchy, so it stopped at TimeGrid and never reached Group or Node. This caused SG1002 ("Field not found") to fire for every inherited attribute — including universal ones like id and translation — on any component that used TimeGrid.

Discovered and reproducible via jellyrock/jellyrock#347, a Renovate PR that bumped brighterscript-xml-plugin and surfaced the SG1002 errors on <JRTimeGrid id="scheduleGrid" translation="[0,600]" />.

Changes

src/data.ts

• Set extends to Group (restoring the full RSG inheritance chain: TimeGrid → Group → Node)
• Populated all 66 fields from the Roku TimeGrid docs, organised by section:
  • General settings (maxDays, duration, contentStartTime, autoDismissTime, …)
  • App/channel focus (animateToChannel, jumpToChannel, channelFocused, …)
  • Channel information column (channelInfoWidth, channelInfoFocusable, channelInfoComponentName, …)
  • Program grid (programTitleColor, programFocused, fillProgramGaps, …)
  • Past time screen, time bar, now bar
  • Now/Next mode (nowNextMode, nowBackgroundBitmapUri, …)

src/XmlProvider.spec.ts

Three new tests:

• Own fields — completions for <TimeGrid include content, nowNextMode, programTitleColor, channelInfoWidth
• Inherited fields — completions include translation and visible (from Group) and id (from Node)
• No SG1002 — validating <TimeGrid id="scheduleGrid" translation="[0,600]" /> produces zero SG1002 diagnostics

Testing

npm run build && npm test
# 10 passing