add CI images to repo

.forgejo/workflows/nvim-bundle.yml

@@ -0,0 +1,32 @@
+name: build
+
+on:
+  push:
+    branches:
+      - main
+jobs:
+  nvim-bundle:
+    runs-on: nix-latest
+    strategy:
+      matrix:
+        package_name: ["nvim"]
+    steps:
+      - uses: actions/checkout@v4
+      - name: nix flake check
+        run: nix flake check
+      - name: Run `nix bundle`
+        if: github.ref == 'refs/heads/main'
+        id: build
+        run: |
+          nix bundle \
+              -o ${{ matrix.package_name }}.AppImage \
+              --bundler github:ralismark/nix-appimage \
+              --extra-experimental-features nix-command \
+              --extra-experimental-features flakes .#${{ matrix.package_name }}
+          echo "Done building AppImage for ${{ matrix.package_name }}"
+      - name: Upload bundle to release
+        if: github.ref == 'refs/heads/main'
+        uses: https://data.forgejo.org/forgejo/upload-artifact@v4
+        with:
+          path: "${{ matrix.package_name }}.AppImage"
+          name: "${{ matrix.package_name }}-x86_64-linux.AppImage"