add ci workflow

.github/workflows/test.yml

@@ -0,0 +1,21 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  test-core:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+    env:
+      CI_OS_NAME: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+      - uses: https://k7izh9.gitea.cloud/kiss-lang/setup-lix@1.0.2
+        with:
+          lix-version: 15.12.0
+      - run: lix download
+      - run: ./test.sh
+        shell: bash