add debug flatpak ci job type

.github/workflows/validate.yml

@@ -160,6 +160,9 @@ jobs:
   build-flatpak:
     name: Build Flatpak
     runs-on: ubuntu-24.04
+    strategy:
+      matrix:
+        preset: ["flatpak-debug", "flatpak-release"]
     env:
       FLATPAK_ID: io.github.hedge_dev.unleashedrecomp
 
@@ -185,7 +188,7 @@ jobs:
         uses: actions/cache@v4
         with:
           path: /tmp/ccache
-          key: ccache-${{ runner.os }}
+          key: ccache-${{ runner.os }}-${{ matrix.preset }}
 
       - name: Prepare Project
         run: cp ./private/* ./UnleashedRecompLib/private
@@ -198,7 +201,7 @@ jobs:
         run: |
           echo "commit_message=$(git log -1 --pretty=%s)" >> $GITHUB_ENV
           export CCACHE_DIR=/tmp/ccache
-          flatpak-builder --user --force-clean --install-deps-from=flathub --repo=repo --ccache builddir ./flatpak/${{ env.FLATPAK_ID }}.json
+          flatpak-builder --user --force-clean --install-deps-from=flathub --repo=repo --ccache builddir ./flatpak/${{ env.FLATPAK_ID }}-${{ matrix.preset }}.json
           flatpak build-bundle repo ./${{ env.FLATPAK_ID }}.flatpak ${{ env.FLATPAK_ID }} --runtime-repo=https://flathub.org/repo/flathub.flatpakrepo
 
       - name: Upload Artifact