chore: Move private packages to internal (#1664)

internal/httphandler/health.go

@@ -0,0 +1,19 @@
+package httphandler
+
+import (
+	"net/http"
+)
+
+type HealthHandler struct{}
+
+// Interface guard.
+var _ http.Handler = (*HealthHandler)(nil)
+
+func NewHealthHandler() HealthHandler {
+	return HealthHandler{}
+}
+
+func (h HealthHandler) ServeHTTP(w http.ResponseWriter, _ *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	_, _ = w.Write([]byte(`{"status":"ok"}`))
+}