Adding workflow to run specflow tests as a nightly build

.github/workflows/compile.yml

@@ -1,4 +1,5 @@
 name: Compile
+# Compiles the solution and runs unit tests.
 
 on:
   workflow_dispatch:

.github/workflows/specflow.yml

@@ -0,0 +1,39 @@
+name: SpecFlow tests
+# Compiles the solution and runs unit tests, as well the SpecFlow tests on the main development branches.
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron:  '0 0 * * *' # Every day at midnight.
+
+jobs:
+  compile:
+    name: SpecFlow tests
+    defaults:
+      run:
+        shell: pwsh
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        branch: [dev, 1.10.x]
+
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+        with:
+          ref: ${{ matrix.branch }}
+
+      - name: Restore NuGet packages
+        run: nuget restore src/Orchard.sln
+
+      - name: Add msbuild to PATH
+        uses: microsoft/setup-msbuild@6fb02220983dee41ce7ae257b6f4d8f9bf5ed4ce # v2.0.0
+
+      - name: Compile
+        run: msbuild Orchard.proj /m /t:Compile /p:MvcBuildViews=true /p:TreatWarningsAsErrors=true -WarnAsError
+
+      - name: Test
+        run: msbuild Orchard.proj /m /t:Test
+
+      - name: Spec
+        run: msbuild Orchard.proj /m /t:Spec