Swift: split quick tests in separate action

Also, make the quick test list explicit in the action code, so we can
catch an inadvertant test deletion.

.github/workflows/swift.yml

@@ -45,16 +45,18 @@ jobs:
               - 'swift/**/*.qll'
   # not using a matrix as you cannot depend on a specific job in a matrix, and we want to start linux checks
   # without waiting for the macOS build
-  build-macos:
+  build-and-test-macos:
     runs-on: macos-12-xl
     steps:
       - uses: actions/checkout@v3
-      - uses: ./swift/actions/create-and-test-extractor-pack
-  build-linux:
+      - uses: ./swift/actions/create-extractor-pack
+      - uses: ./swift/actions/run-quick-tests
+  build-and-test-linux:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v3
-      - uses: ./swift/actions/create-and-test-extractor-pack
+      - uses: ./swift/actions/create-extractor-pack
+      - uses: ./swift/actions/run-quick-tests
   qltests-linux:
     needs: build-linux
     runs-on: ubuntu-latest

swift/actions/create-extractor-pack/action.yml

@@ -0,0 +1,18 @@
+name: Run Swift quick tests
+description: Runs Swift tests defined in Bazel. Must be run after `setup-env`
+runs:
+  using: composite
+  steps:
+    - name: Run xcode-autobuilder tests
+      if: ${{ runner.os == "macOS" }}
+      shell: bash
+      run: |
+        bazel test //swift/xcode-autobuilder/tests
+    - name: Run codegen tests
+      shell: bash
+      run: |
+        bazel test //swift/codegen/tests
+    - name: Run qltest tests
+      shell: bash
+      run: |
+        bazel test //swift/tools/test/qltest