SKA-462: add workflows + actions for public github repo (#15)

.github/actions/build-cmake-preset/action.yml

@@ -0,0 +1,35 @@
+name: build CMake preset
+description: Build the given SIL Kit Adapters CMake preset
+
+inputs:
+  preset-name:
+    description: "The preset name from CMakePresets.json."
+    required: true
+  cmake-args:
+    description: "Additional CMake arguments"
+    required: false
+
+runs:
+  using: composite
+  steps:
+
+    - name: Setup host
+      if: runner.os == 'Linux'
+      run: sudo apt install -y ninja-build
+      id: setup-host-linux
+      shell: bash
+
+    - name: Configure ${{ inputs.preset-name }}
+      run: cmake --preset ${{ inputs.preset-name }} ${{ inputs.cmake-args }}
+      id: cmake-configure
+      shell: bash
+
+    - name: Build ${{ inputs.preset-name }}
+      id: cmake-build
+      run: cmake --build --preset ${{ inputs.preset-name }}
+      shell: bash
+
+    - name: Pack ${{ inputs.preset-name }}
+      id: cmake-pack
+      run: cmake --build --preset ${{ inputs.preset-name }} --target package
+      shell: bash

.github/workflows/build-linux-release.yaml

@@ -0,0 +1,29 @@
+name: 'Linux Release Build'
+
+on:
+  push:
+    tags:
+      - "v*.*.*"
+
+jobs:
+  linux-release:
+    name: Build SIL Kit GLIO for Release configuration
+    environment: public-github-runners
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+      - name: Build
+        uses: ./.github/actions/build-cmake-preset
+        with:
+          preset-name: linux-release
+          cmake-args:  "-D PACKAGE_FILENAME_SUFFIX=-${{ github.ref_name }}-ubuntu-20.04-x86_64-gcc"
+      - name: Release
+        uses: softprops/action-gh-release@v1
+        with:
+          prerelease: true
+          draft: true
+          files: |
+            _build/linux-release/SilKit-Adapters*.zip

.github/workflows/repo-sync-public.yaml

@@ -0,0 +1,23 @@
+on:
+  push:
+    branches:
+      - 'main'
+jobs:
+  sync_main_branch:
+    name: Sync branch to remote public GitHub
+    runs-on: 
+      group: shared-runners
+      labels: Linux
+    environment: repo-sync-action/public-github
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          clean: true
+          fetch-depth: 0
+      - uses: vector-actions/repo-sync-action@main
+        with:
+          app-key:          ${{ secrets.APP_KEY }}
+          app-id:           ${{ secrets.APP_ID }}
+          remote-repo-url:  ${{ secrets.REMOTE_REPO_URL }}
+          remote-branch:    ${{ secrets.REMOTE_BRANCH }}
+          local-branch:     origin/main