Merge fluent.integration and lint actions into a single ci.yml

Author: eemeli

.github/workflows/lint.yml renamed to .github/workflows/ci.yml

@@ -1,4 +1,4 @@
-name: lint
+name: CI
 
 on:
   push:
@@ -18,3 +18,13 @@ jobs:
       - run: python -m pip install ./fluent.syntax ./fluent.runtime
       - run: python -m flake8
       - run: python -m mypy fluent.syntax/fluent fluent.runtime/fluent
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: 3.9
+      - run: python -m pip install ./fluent.syntax ./fluent.runtime
+      - run: python -m unittest discover -s fluent.syntax
+      - run: python -m unittest discover -s fluent.runtime