feat(coucbase): add example

couchbase/go.mod

@@ -1,3 +1,31 @@
 module github.com/tiennm99/couchbase-keepalive
 
 go 1.24.10
+
+require github.com/couchbase/gocb/v2 v2.11.1
+
+require (
+	github.com/couchbase/gocbcore/v10 v10.8.1 // indirect
+	github.com/couchbase/gocbcoreps v0.1.4 // indirect
+	github.com/couchbase/goprotostellar v1.0.2 // indirect
+	github.com/couchbaselabs/gocbconnstr/v2 v2.0.0 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/golang/snappy v1.0.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/gorilla/websocket v1.5.3 // indirect
+	github.com/grpc-ecosystem/go-grpc-middleware v1.4.0 // indirect
+	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.62.0 // indirect
+	go.opentelemetry.io/otel v1.37.0 // indirect
+	go.opentelemetry.io/otel/metric v1.37.0 // indirect
+	go.opentelemetry.io/otel/trace v1.37.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.27.0 // indirect
+	golang.org/x/net v0.43.0 // indirect
+	golang.org/x/sys v0.35.0 // indirect
+	golang.org/x/text v0.28.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250811230008-5f3141c8851a // indirect
+	google.golang.org/grpc v1.74.2 // indirect
+	google.golang.org/protobuf v1.36.7 // indirect
+)