Add minimal CI via GitHub Actions

.github/workflows/tests.yml

@@ -0,0 +1,45 @@
+name: tests
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Clojure deps cache
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.m2/repository
+            ~/.deps.clj
+            ~/.gitlibs
+          key: cljdeps-${{ hashFiles('deps.edn') }}
+          restore-keys: cljdeps-
+
+      - name: Setup Java
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'temurin'
+          java-version: 8
+
+      - name: Install Clojure Tools
+        uses: DeLaGuardo/[email protected]
+        with:
+          cli: 'latest'
+
+      - name: Tools Versions
+        run: |
+          echo "java -version"
+          java -version
+          echo "clojure --version"
+          clojure --version
+
+      - name: Run tests
+        run: clojure -M:test