ci: add Wio Tracker L1 firmware build and release workflow

Builds and releases only the _settings companion firmware variants
(USB and BLE) which contain the settings screen with display brightness,
buzzer, TX power, auto-off, GPS interval, timezone, low battery threshold,
and battery display mode.

Triggers on tags matching 'wio-tracker-*' (e.g. wio-tracker-v1.0.0)
or manually via workflow_dispatch. Creates a draft GitHub release.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/workflows/build-wio-tracker-l1-firmwares.yml

@@ -0,0 +1,42 @@
+name: Build Wio Tracker L1 Firmwares
+
+permissions:
+  contents: write
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - 'wio-tracker-*'
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: Clone Repo
+        uses: actions/checkout@v4
+
+      - name: Setup Build Environment
+        uses: ./.github/actions/setup-build-environment
+
+      - name: Build Firmwares
+        env:
+          FIRMWARE_VERSION: ${{ env.GIT_TAG_VERSION }}
+        run: /usr/bin/env bash build.sh build-wio-tracker-l1-firmwares
+
+      - name: Upload Workflow Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: wio-tracker-l1-firmwares
+          path: out
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v2
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          name: Wio Tracker L1 Firmware ${{ env.GIT_TAG_VERSION }}
+          body: ""
+          draft: true
+          files: out/*