Explain @solid-bricks/barcode SSR behavior 

### Describe the problem

It's not clear what happens when you render a `<Barcode />` element in SSR.

### Describe the proposed solution

Add:

- ssr example (Astro?)
- add SSR section in `packages/barcode/Readme.md`
 

### Alternatives considered

nope

### Importance

would make my life easier