feat: Add Github Action for dependency freshness metric

.github/workflows/dependency-freshness-metric.yml

@@ -0,0 +1,27 @@
+name: 📊 Dependency Freshness Metric
+on:
+  workflow_dispatch:
+
+  pull_request:
+    branches:
+      - main
+
+  push:
+    branches:
+      - main
+
+env:
+  sln-path: TotalEnergies.Bachelor.Api.sln
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: 📊 Gather dependency freshness metric
+        shell: bash
+        run: |
+          dotnet tool install -g libyear
+          dotnet libyear $(dotnet sln ${{ env.sln-path }} list | grep "\.csproj$")