Multiple plugins possible?

### Prerequisites

- [x] I have written a descriptive issue title
- [x] I have searched existing issues to ensure the issue has not already been raised

### Issue

I see in the known limitations section it says that its not possible to register FastifyVite multiple times. But the issue is closed out until Vite environments was merged in. I see that has now happened and I'm wondering if its possible to register FastifyVite multiple times now.

I ask because I'm trying to have my main Vue application run in SPA mode and have a separate page (only a single page) be SSR. It feels too heavy handed to use fastify-vue and annotate everything client side only and get all the other functionality I don't need for a single page but I can't figure out how to get my existing SPA and separate page to all play nicely in the same fastify server. I'm thinking having two instances of fastify-vite, one in SPA mode and the other pointed at the separate entry point for the page I want rendered would work.

If it is possible could you please provide an example of how to do it? Or if there is a better way to accomplish what I'm trying to do please let me know.