chore: add tmate for manual ssh into runner

.github/workflows/test.yml

@@ -7,6 +7,12 @@ on:
   pull_request:
     branches:
     - main
+  workflow_dispatch:
+    inputs:
+      tmate_debug_enabled:
+        description: 'Run the build with tmate debugging enabled (https://github.com/marketplace/actions/debugging-with-tmate)'
+        required: false
+        default: false
 
 jobs:
   ci:
@@ -30,6 +36,10 @@ jobs:
           python -m pip --version
           python -m pip install wheel
           python -m pip install -r requirements/tests.txt
+      - name: Setup tmate session
+        uses: mxschmitt/action-tmate@v3
+        if: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.tmate_debug_enabled }}
+        timeout-minutes: 15
       - name: Run QA Checks
         if: ${{ startsWith(matrix.os, 'ubuntu') && startsWith(matrix.python-version, '3.10') }}
         run: python -m xonsh run-tests.xsh qa