ci: allow debugging

Author: Rafael Stahl

.github/workflows/ci.yml

@@ -1,6 +1,15 @@
 name: CI
 
-on: [push, pull_request]
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+    inputs:
+      debug_enabled:
+        type: boolean
+        description: 'Run the build with tmate debugging enabled'
+        required: false
+        default: false
 
 jobs:
   build:
@@ -15,7 +24,7 @@ jobs:
     name: ${{ matrix.config.name }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Requirements (Linux)
       if: startsWith(matrix.config.name, 'Linux')
@@ -31,5 +40,9 @@ jobs:
     - name: Build
       run: cd build && cmake --build .
 
+    - name: Setup tmate session
+      uses: mxschmitt/action-tmate@v3
+      if: ${{ github.event_name == 'workflow_dispatch' && inputs.debug_enabled }}
+
     - name: Test
       run: cd bin64 && ./hl_test