Initial code

.devcontainer/devcontainer.json

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+{
+	"name": "C# .NET GitHub CLI Ext",
+
+  // For info about the dotnet dev container image see:
+  //   https://github.com/devcontainers/images/blob/main/src/dotnet/README.md
+  // For a list of tag variants for the dotnet dev container images see:
+  //   https://mcr.microsoft.com/v2/devcontainers/dotnet/tags/list
+  "image": "mcr.microsoft.com/vscode/devcontainers/dotnet:8.0-bookworm-slim",
+
+	// Configure tool-specific properties.
+	"customizations": {
+
+		// Configure properties specific to VS Code.
+		"vscode": {
+
+			// Add the IDs of extensions you want installed when the container is created.
+			"extensions": [
+				"editorconfig.editorconfig",
+				"github.vscode-github-actions",
+				"github.copilot",
+				"github.copilot-chat",
+				"ms-dotnettools.csdevkit",
+				"ms-vscode.powershell"
+			]
+		}
+	},
+
+  // For available dev container features see:
+  //   https://containers.dev/features
+	"features": {
+		"ghcr.io/devcontainers/features/github-cli:1": {}
+	},
+	"remoteUser": "vscode"
+}

.gitattributes

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+# Normalize line endings to LF for all text files committed into the git repo
+# while leaving local line endings untouched in the working tree (local folders).
+# This helps avoid problems where contributors don't all have their git config set
+# to ensure text files committed use LF line endings.
+# See: https://www.aleksandrhovhannisyan.com/blog/crlf-vs-lf-normalizing-line-endings-in-git/
+
+* text=auto

.github/workflows/ci.yml

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+name: ci/cd
+on:
+  pull_request:
+  push:
+    branches: [main]
+    tags: ["v*"]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 🤘 checkout
+        uses: actions/checkout@v3
+
+      - name: ✓ check format
+        run: |
+          dotnet format whitespace --verify-no-changes -v:diag --exclude ~/.nuget
+          dotnet format style --verify-no-changes -v:diag --exclude ~/.nuget
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 🤘 checkout
+        uses: actions/checkout@v3
+
+      - name: 🔧 setup-dotnet
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: '8.0.x'
+          dotnet-quality: 'ga'
+
+      - name: 🔄 restore
+        run: dotnet restore -m:1
+
+      - name: 🙏 build
+        run: dotnet build --no-restore -m:1
+
+#      - name: 🧪 test
+#        run: dotnet test --no-build --no-restore
+
+      - name: 📦 publish (package) artifacts
+        run: |
+          dotnet publish src/Extension.csproj -c Release -r win-x64 --self-contained -o bin/win-x64 --no-restore -p:PublishSingleFile=true /p:IncludeNativeLibrariesForSelfExtract=true
+          dotnet publish src/Extension.csproj -c Release -r osx-x64 --self-contained -o bin/osx-x64 --no-restore -p:PublishSingleFile=true /p:IncludeNativeLibrariesForSelfExtract=true
+          dotnet publish src/Extension.csproj -c Release -r osx-arm64 --self-contained -o bin/osx-arm64 --no-restore -p:PublishSingleFile=true /p:IncludeNativeLibrariesForSelfExtract=true
+          dotnet publish src/Extension.csproj -c Release -r linux-x64 --self-contained -o bin/linux-x64 --no-restore -p:PublishSingleFile=true /p:IncludeNativeLibrariesForSelfExtract=true
+
+      - name: ➡️ stage artifacts
+        run: |
+          mkdir -p ${{ runner.temp }}/staging
+          cp bin/win-x64/gh-sample-ext-csharp.exe ${{ runner.temp }}/staging/sample-ext-csharp-windows-amd64.exe
+          cp bin/osx-x64/gh-sample-ext-csharp ${{ runner.temp }}/staging/sample-ext-csharp-darwin-amd64
+          cp bin/osx-arm64/gh-sample-ext-csharp ${{ runner.temp }}/staging/sample-ext-csharp-darwin-arm64
+          cp bin/linux-x64/gh-sample-ext-csharp ${{ runner.temp }}/staging/sample-ext-csharp-linux-amd64
+
+      - name: ⬆️ upload artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: executables
+          path: ${{ runner.temp }}/staging/*
+
+  publish:
+    runs-on: ubuntu-latest
+    needs: build
+    permissions:
+      contents: write
+    if: startsWith(github.ref, 'refs/tags/v')
+    steps:
+
+      - name: 🤘 checkout
+        uses: actions/checkout@v3
+
+      - name: ⬇️ download artifacts
+        uses: actions/download-artifact@v3
+        with:
+          name: executables
+          path: ${{ runner.temp }}/dist
+
+      - name: 🚀 create draft release
+        uses: softprops/action-gh-release@v1
+        with:
+          draft: true
+          generate_release_notes: false
+          fail_on_unmatched_files: true
+          files: |
+            ${{ runner.temp }}/dist/sample-ext-csharp-windows-amd64.exe
+            ${{ runner.temp }}/dist/sample-ext-csharp-darwin-amd64
+            ${{ runner.temp }}/dist/sample-ext-csharp-darwin-arm64
+            ${{ runner.temp }}/dist/sample-ext-csharp-linux-amd64