ci: add github actions workflow

Author: Microck

.github/workflows/ci.yml

@@ -0,0 +1,23 @@
+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.21'
+      - name: Start Redis and Postgres
+        run: docker compose up -d redis postgres
+      - name: Build
+        run: mkdir -p bin && go build -o ./bin/bansho ./cmd/bansho
+      - name: Test
+        run: go test ./...