[SL-ONLY] Feature/rangehood app

[bhmanda-silabs]

Summary

This PR introduces new Matter Rangehood example implementing composite device type of Fan and Light.

Summary of Updates:

Implemented multi-endpoint architecture:

Root Node Endpoint (ID: 0)
Fan Endpoint (ID: 1)
Light Endpoint(ID: 2)

Added Fan control and Light On/Off control. Added button implementation to control fan on/off.
Also added LED mapping to display current state of the light.

Related issues

MATTER-5148

Testing

Verified commissioning and basic functionality on SiWx917 evaluation board.
Validated fan control via cluster commands as well as on BTN1 Press.
Validated lighting on/off via cluster commands

Readability checklist

The checklist below will help the reviewer finish PR review in time and keep the
code readable:

• PR title is
  descriptive
• Apply the
  “When in Rome…”
  rule (coding style)
• PR size is short
• Try to avoid "squashing" and "force-update" in commit history
• CI time didn't increase

See: Pull Request Guidelines

---

Note

Introduces a Silabs Matter rangehood example app with multi-endpoint Fan and Light control, button/LED handling, and corresponding GN/ZAP data model and build configs.

• Example App (SiLabs):
  • Adds rangehood-app with endpoints: root (0), extractor hood fan (1, FanControl), light (2, OnOff).
  • Implements classes ExtractorHoodEndpoint, LightEndpoint, and RangeHoodManager with attribute-change handling and state sync.
  • AppTask wiring: button BTN1 toggles fan Off/High; LED reflects light on/off; event dispatch via DataModelCallbacks.
• Data Model:
  • Adds ZAP/IDL (rangehood-wifi-app.zap/.matter) defining clusters and attributes for all endpoints.
• Build/Config:
  • Introduces GN build files (.gn, BUILD.gn, data_model BUILD.gn) and Wi‑Fi args; enables OTA Requestor for SiWx917.
  • Adds project configs (CHIPProjectConfig.h, AppConfig.h) and third-party CHIP link.

^{Written by Cursor Bugbot for commit 51117f0. This will update automatically on new commits. Configure here.}

[sabollim-silabs]

few nit picks

[sabollim-silabs]

LGTM, approving with few nits