Add GitHub Actions CI workflow

- Created a new GitHub Actions workflow for CI.
- The workflow runs on every push to the main branch.
- It sets up Go, checks out the code, gets dependencies, builds the project, and runs tests.

Signed-off-by: Daniel Hu <[email protected]>

.github/workflows/ci.yml

@@ -0,0 +1,28 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.20
+
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v2
+
+    - name: Get dependencies
+      run: go get -v -t -d ./...
+
+    - name: Build
+      run: go build -v ./...
+
+    - name: Test
+      run: go test -v ./...