autobuild-action: Run autobuilders with $CODEQL_RUNNER set.

Without this, the tracer will not be injected on MacOS, as we need the
runner to circumvent SIP.
Also add a test that tests the autobuild-action to exercise this code path.

.github/workflows/__autobuild-macos-dotnet.yml

@@ -0,0 +1,64 @@
+# Warning: This file is generated automatically, and should not be modified.
+# Instead, please modify the template in the pr-checks directory and run:
+#     pip install ruamel.yaml && python3 sync.py
+# to regenerate this file.
+
+name: 'PR Check - Autobuild '
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  GO111MODULE: auto
+on:
+  push:
+    branches:
+    - main
+    - releases/v1
+    - releases/v2
+  pull_request:
+    types:
+    - opened
+    - synchronize
+    - reopened
+    - ready_for_review
+  workflow_dispatch: {}
+jobs:
+  autobuild-macos-dotnet:
+    strategy:
+      matrix:
+        include:
+        - os: ubuntu-latest
+          version: latest
+        - os: macos-latest
+          version: latest
+        - os: windows-2019
+          version: latest
+        - os: windows-2022
+          version: latest
+    name: 'Autobuild '
+    timeout-minutes: 45
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v3
+    - name: Prepare test
+      id: prepare-test
+      uses: ./.github/prepare-test
+      with:
+        version: ${{ matrix.version }}
+    - uses: ./../action/init
+      with:
+        languages: csharp
+        tools: ${{ steps.prepare-test.outputs.tools-url }}
+    - uses: ./../action/autobuild
+    - uses: ./../action/analyze
+      env:
+        TEST_MODE: true
+    - name: Check database
+      shell: bash
+      run: |
+        cd "$RUNNER_TEMP/codeql_databases"
+        if [[ ! -d csharp ]]; then
+          echo "Did not find a C# database"
+          exit 1
+        fi
+    env:
+      INTERNAL_CODEQL_ACTION_DEBUG_LOC: true

lib/codeql.js

@@ -510,7 +510,13 @@ async function getCodeQLForCmd(cmd, checkVersion) {
                 "-Dhttp.keepAlive=false",
                 "-Dmaven.wagon.http.pool=false",
             ].join(" ");
-            await runTool(autobuildCmd);
+            const runnerExe = process.env["CODEQL_RUNNER"];
+            if (runnerExe) {
+                await runTool(runnerExe, [autobuildCmd]);
+            }
+            else {
+                await runTool(autobuildCmd);
+            }
         },
         async extractScannedLanguage(databasePath, language, featureFlags) {
             // Get extractor location

pr-checks/checks/autobuild-macos-dotnet.yml

@@ -0,0 +1,20 @@
+name: "Autobuild "
+description: "Tests that C# "
+versions: ["latest"]
+steps:
+  - uses: ./../action/init
+    with:
+      languages: csharp
+      tools: ${{ steps.prepare-test.outputs.tools-url }}
+  - uses: ./../action/autobuild
+  - uses: ./../action/analyze
+    env:
+      TEST_MODE: true
+  - name: Check database
+    shell: bash
+    run: |
+      cd "$RUNNER_TEMP/codeql_databases"
+      if [[ ! -d csharp ]]; then
+        echo "Did not find a C# database"
+        exit 1
+      fi

src/codeql.ts

@@ -780,7 +780,12 @@ async function getCodeQLForCmd(
         "-Dmaven.wagon.http.pool=false",
       ].join(" ");
 
-      await runTool(autobuildCmd);
+      const runnerExe = process.env["CODEQL_RUNNER"];
+      if (runnerExe) {
+        await runTool(runnerExe, [autobuildCmd]);
+      } else {
+        await runTool(autobuildCmd);
+      }
     },
     async extractScannedLanguage(
       databasePath: string,