Initial commit: Simple Sensor firmware for Heltec T114 with BME280

- MeshCore-based Simple Sensor firmware
- Heltec T114 without display
- BME280 sensor support (temp/humidity/pressure)
- Radio: 868.856018 MHz, SF7, BW62.5 kHz, CR4/7
- 2-byte path hash
- PlatformIO project

.github/FUNDING.yml

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+github: meshcore-dev

.github/actions/setup-build-environment/action.yml

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+name: Setup Build Environment
+runs:
+  using: "composite"
+  steps:
+
+    - name: Init Cache
+      uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cache/pip
+          ~/.platformio/.cache
+        key: ${{ runner.os }}-pio
+
+    - name: Install Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.11'
+
+    - name: Install PlatformIO
+      shell: bash
+      run: |
+        pip install --upgrade platformio
+
+    # a git tag of "room-server-v1.2.3" should set "v1.2.3" as GIT_TAG_VERSION
+    - name: Extract Version from Git Tag
+      shell: bash
+      run: |
+        GIT_TAG_NAME="${GITHUB_REF#refs/tags/}"
+        echo "GIT_TAG_VERSION=${GIT_TAG_NAME##*-}" >> $GITHUB_ENV

.github/workflows/build-companion-firmwares.yml

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+name: Build Companion Firmwares
+
+permissions:
+  contents: write
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - 'companion-*'
+
+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-companion-firmwares
+
+      - name: Upload Workflow Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: companion-firmwares
+          path: out
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v2
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          name: Companion Firmware ${{ env.GIT_TAG_VERSION }}
+          body: ""
+          draft: true
+          files: out/*

.github/workflows/build-repeater-firmwares.yml

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+name: Build Repeater Firmwares
+
+permissions:
+  contents: write
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - 'repeater-*'
+
+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-repeater-firmwares
+
+      - name: Upload Workflow Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: repeater-firmwares
+          path: out
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v2
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          name: Repeater Firmware ${{ env.GIT_TAG_VERSION }}
+          body: ""
+          draft: true
+          files: out/*

.github/workflows/build-room-server-firmwares.yml

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+name: Build Room Server Firmwares
+
+permissions:
+  contents: write
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - 'room-server-*'
+
+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-room-server-firmwares
+
+      - name: Upload Workflow Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: room-server-firmwares
+          path: out
+
+      - name: Create Release
+        uses: softprops/action-gh-release@v2
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          name: Room Server Firmware ${{ env.GIT_TAG_VERSION }}
+          body: ""
+          draft: true
+          files: out/*

.github/workflows/github-pages.yml

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+name: Build and deploy Docs site to GitHub Pages
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+
+jobs:
+  github-pages:
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: Checkout Repo
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          ruby-version: 3.x
+
+      - name: Build
+        run: |
+          pip install mkdocs-material
+          mkdocs build
+
+      - name: Deploy to GitHub Pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          cname: docs.meshcore.io
+          publish_dir: ./site
+          publish_branch: 'gh-pages'

.github/workflows/pr-build-check.yml

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+name: PR Build Check
+
+on:
+  pull_request:
+    branches: [main, dev]
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'variants/**'
+      - 'platformio.ini'
+      - '.github/workflows/pr-build-check.yml'
+  push:
+    branches: [main, dev]
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'variants/**'
+      - 'platformio.ini'
+      - '.github/workflows/pr-build-check.yml'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        environment:
+          # ESP32-S3 (most common platform)
+          - Heltec_v3_companion_radio_ble
+          - Heltec_v3_repeater
+          - Heltec_v3_room_server
+          # nRF52
+          - RAK_4631_companion_radio_ble
+          - RAK_4631_repeater
+          - RAK_4631_room_server
+          # RP2040
+          - PicoW_repeater
+          # STM32
+          - wio-e5-mini_repeater
+          # ESP32-C6
+          - LilyGo_Tlora_C6_repeater_
+
+    steps:
+      - name: Clone Repo
+        uses: actions/checkout@v4
+
+      - name: Setup Build Environment
+        uses: ./.github/actions/setup-build-environment
+
+      - name: Build ${{ matrix.environment }}
+        run: pio run -e ${{ matrix.environment }}