ci: add GitHub Actions workflow for LND integration tests

Configures CI to run LND tests using the Docker Compose environment.

Closes lightningdevkit#505

Author: moisesPompilio

.github/workflows/lnd-integration.yml

@@ -0,0 +1,16 @@
+name: CI Checks - LND Integration Tests
+
+on: [push, pull_request]
+
+jobs:
+  check-cln:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Start bitcoind, electrs, and LND
+        run: docker compose -f docker-compose-lnd.yml up -d
+
+      - name: Run LND integration tests
+        run: RUSTFLAGS="--cfg lnd_test" cargo test --test integration_test_lnd