add basic ci

.github/workflows/workflow.yml

@@ -0,0 +1,32 @@
+# This is a basic workflow to help you get started with Actions
+
+name: CI
+
+# Controls when the workflow will run
+on: [push, pull_request] 
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build-and-test:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: checker-framework-jspecify-conformance
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - name: Check out CF JSpecify Conformance Tests
+        uses: actions/checkout@v4
+        with:
+          path: checker-framework-jspecify-conformance
+      - name: Set up Java
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 17
+      - name: Set up Gradle
+        uses: gradle/gradle-build-action@v3
+      - name: Build and Test
+        run: ./gradlew build run