Create Copilot setup workflow with Node.js and .NET environment

Co-authored-by: BenjaminMichaelis <22186029+BenjaminMichaelis@users.noreply.github.com>

Author: Copilot

.github/workflows/copilot-setup-steps.yml

@@ -0,0 +1,51 @@
+name: Copilot Setup Steps
+
+on:
+  push:
+    paths:
+      - '.github/workflows/copilot-setup-steps.yml'
+  pull_request:
+    paths:
+      - '.github/workflows/copilot-setup-steps.yml'
+  workflow_dispatch:
+
+defaults:
+  run:
+    shell: pwsh
+
+jobs:
+  copilot-setup-steps:
+    name: copilot-setup-steps
+    runs-on: ubuntu-latest
+    
+    permissions:
+      contents: read
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v5
+      
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20'
+        cache: 'npm'
+        
+    - name: Install JavaScript dependencies
+      run: npm ci
+      
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: | 
+            3.1.x
+            6.x
+            
+    - name: Restore .NET dependencies
+      run: dotnet restore
+      
+    - name: Setup Copilot environment
+      run: |
+        echo "Setting up Copilot-specific environment variables..."
+        echo "COPILOT_SETUP_COMPLETE=true" >> $env:GITHUB_ENV
+        echo "Copilot environment setup completed"

package-lock.json

@@ -0,0 +1,11 @@
+{
+  "name": "testtools-console-copilot",
+  "version": "1.0.0",
+  "description": "JavaScript dependencies for GitHub Copilot environment setup",
+  "private": true,
+  "scripts": {},
+  "devDependencies": {},
+  "engines": {
+    "node": ">=20.0.0"
+  }
+}