Add workflow for updating flake.lock

.github/workflows/main.yml

@@ -0,0 +1,26 @@
+name: "Update flake.lock"
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 8 * * *"
+
+jobs:
+  lockfile:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+    - name: Install Nix
+      uses: DeterminateSystems/nix-installer-action@v1
+    - name: Update flake.lock
+      uses: DeterminateSystems/update-flake-lock@v19
+      with:
+        git-author-name: 'caem'
+        git-author-email: 'caem@dirae.org'
+        git-comitter-name: 'caem'
+        git-comitter-email: 'caem@dirae.org'
+        pr-title: "Automated: Update flake.lcok"
+        pr-labels: |
+          dependencies
+          automated