Let `LuaTests` run in CI

.github/workflows/ci.yml

@@ -42,6 +42,9 @@ jobs:
         with:
           dotnet-version: "8"
 
+      - uses: ilammy/msvc-dev-cmd@v1 # required by leafo/gh-actions-lua on Windows, no-op on Linux
+      - uses: leafo/gh-actions-lua@v11
+
       - name: Test
         run: dotnet test BizHawk.sln -c Release -p:ContinuousIntegrationBuild=true
         shell: pwsh

.gitlab-ci.yml

@@ -201,6 +201,7 @@ run_tests:
   - job: build_asms_release
     artifacts: false
   script:
+  - apt-get update && apt-get install liblua5.4-0
   - Dist/BuildTestRelease.sh -v normal -p:TestProjTargetFrameworkOverride=net8.0
   stage: test
 

src/BizHawk.Tests/Client.Common/lua/LuaTests.cs

@@ -8,13 +8,8 @@ using BizHawk.Client.Common;
 
 namespace BizHawk.Tests.Client.Common.Lua
 {
-#if SKIP_PLATFORM_TESTS
-#pragma warning disable MSTEST0004 // missing `[TestClass]`
-#pragma warning disable MSTEST0030 // ditto
-#else
 	[DoNotParallelize]
 	[TestClass]
-#endif
 	public class LuaTests
 	{
 		private static readonly NLua.Lua LuaInstance = new();