Add GitHub Actions workflow for .NET Core Azure deployment

Introduce a GitHub Actions workflow to build and deploy the .NET Core application "MalfuzatExplorer" to an Azure Web App. The workflow is triggered by a push to the `master` branch and includes environment variable setup for the Azure Web App name, package path, build configuration, .NET Core version, and working directory.

The workflow consists of two jobs:
- `build`: Runs on the latest Windows environment, checks out the repository, sets up the .NET SDK, restores dependencies, builds the application, runs tests, publishes the application, and uploads the artifacts.
- `deploy`: Depends on the `build` job, runs on the latest Windows environment, downloads the build artifacts, and deploys the application to the Azure Web App using a publish profile stored in GitHub Secrets.

.github/workflows/MalfuzatExplorer.yml

@@ -0,0 +1,48 @@
+name: Build and deploy .NET Core application to Web App MalfuzatExplorer
+on:
+  push:
+    branches:
+    - master
+env:
+  AZURE_WEBAPP_NAME: MalfuzatExplorer
+  AZURE_WEBAPP_PACKAGE_PATH: .\published
+  CONFIGURATION: Release
+  DOTNET_CORE_VERSION: 8.0.x
+  WORKING_DIRECTORY: .
+jobs:
+  build:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Setup .NET SDK
+      uses: actions/setup-dotnet@v3
+      with:
+        dotnet-version: ${{ env.DOTNET_CORE_VERSION }}
+    - name: Restore
+      run: dotnet restore "${{ env.WORKING_DIRECTORY }}"
+    - name: Build
+      run: dotnet build "${{ env.WORKING_DIRECTORY }}" --configuration ${{ env.CONFIGURATION }} --no-restore
+    - name: Test
+      run: dotnet test "${{ env.WORKING_DIRECTORY }}" --no-build
+    - name: Publish
+      run: dotnet publish "${{ env.WORKING_DIRECTORY }}" --configuration ${{ env.CONFIGURATION }} --no-build --output "${{ env.AZURE_WEBAPP_PACKAGE_PATH }}"
+    - name: Publish Artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: webapp
+        path: ${{ env.AZURE_WEBAPP_PACKAGE_PATH }}
+  deploy:
+    runs-on: windows-latest
+    needs: build
+    steps:
+    - name: Download artifact from build job
+      uses: actions/download-artifact@v3
+      with:
+        name: webapp
+        path: ${{ env.AZURE_WEBAPP_PACKAGE_PATH }}
+    - name: Deploy to Azure WebApp
+      uses: azure/webapps-deploy@v2
+      with:
+        app-name: ${{ env.AZURE_WEBAPP_NAME }}
+        publish-profile: ${{ secrets.MalfuzatExplorer_FBE0 }}
+        package: ${{ env.AZURE_WEBAPP_PACKAGE_PATH }}