Migrate CI from CircleCI to GitHub Actions

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: khamilowicz

.circleci/config.yml

@@ -0,0 +1,16 @@
+name: CI
+
+on:
+  push:
+    branches: ["**"]
+  workflow_dispatch:
+
+jobs:
+  build_test:
+    uses: membraneframework/membrane_actions/.github/workflows/build-test.yml@main
+
+  lint:
+    uses: membraneframework/membrane_actions/.github/workflows/lint.yml@main
+
+  test:
+    uses: membraneframework/membrane_actions/.github/workflows/test.yml@main