add basic CI

.github/workflows/main.yml

@@ -0,0 +1,30 @@
+# This is a basic workflow to build robot code.
+
+name: CI
+
+# Controls when the action will run. Triggers the workflow on push or pull request
+# events but only for the main branch.
+on: [push, pull_request, workflow_dispatch]
+
+# 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:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # This grabs the WPILib docker container
+    container: wpilib/roborio-cross-ubuntu:2024-22.04
+
+    # 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
+    - uses: actions/checkout@v4
+
+    # Grant execute permission for gradlew
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
+
+    # Runs a single command using the runners shell
+    - name: Compile and run tests on robot code
+      run: ./gradlew build