ci: add self test on GURU

Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

.github/workflows/test.yml

@@ -0,0 +1,27 @@
+name: test
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 12 * * *'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout pkgcheck-action
+      uses: actions/checkout@v3
+      with:
+        path: pkgcheck-action
+
+    - name: Checkout GURU repository
+      uses: actions/checkout@v3
+      with:
+        repository: gentoo/guru
+        path: guru
+
+    - name: Run pkgcheck
+      uses: ./pkgcheck-action/
+      with:
+        args: --keywords=-RedundantVersion,-NonsolvableDepsInDev guru