add ccache workflow

.github/workflows/test-build.yaml

@@ -0,0 +1,22 @@
+---
+name: build dnf5 with ccache to check for quick build errors
+on:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build-with-ccache:
+    runs-on: ubuntu-latest
+    container:
+      image: fedora:rawhide
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Setup ccache
+        uses: hendrikmuhs/[email protected]
+      - name: Build with ccache
+        run: |
+          export PATH="/usr/lib/ccache:/usr/local/opt/ccache/libexec:$PATH"; \
+          mkdir build; cd build; cmake ..; make