Base/CI: Run tests from /usr/Tests in GitHub Actions

Uncomment the tests that were disabled due to frequent freezes when
running without KVM. This also adds a new github actions group for
every single test, which makes it easier to browse test boundaries
during test runs.

Move catting the serial output log back to its own step, so that it
has higher visibility. The previous solution was also shown to not
actually cat the log in the case of a failed boot and timeout :^(.

.github/workflows/cmake.yml

@@ -141,24 +141,20 @@ jobs:
       if: ${{ matrix.debug-macros == 'NORMAL_DEBUG'}}
       working-directory: ${{ github.workspace }}/Build
       env:
+        SERENITY_QEMU_CPU: "max,vmx=off"
         SERENITY_KERNEL_CMDLINE: "boot_mode=self-test"
         SERENITY_RUN: "ci"
       run: |
         echo "::group::ninja run # Qemu output"
-        run_worked=y
-        ninja run || run_worked=n
+        ninja run
         echo "::endgroup::"
-        echo "::group::cat debug.log # Serenity output"
-        if [ "y" = "${run_worked}" ] ; then
-          cat debug.log
-        else
-          echo "skipped (qemu had non-zero exit-code)"
-        fi
-        echo "::endgroup::"
-        [ "y" = ${run_worked} ]
-      timeout-minutes: 10
-      # FIXME: When stable, remove continue on error. (See issue #5541)
-      continue-on-error: true
+      timeout-minutes: 20
+
+    - name: Print Target Logs
+      # Extremely useful if Serenity hangs trying to run one of the tests
+      if: ${{ !cancelled() && matrix.debug-macros == 'NORMAL_DEBUG'}}
+      working-directory: ${{ github.workspace }}/Build
+      run: '[ ! -e debug.log ] || cat debug.log'
 
   build_and_test_lagom:
     runs-on: ${{ matrix.os }}