Add more customization options

[radugrecu97]

I found that optimally, I wanted a size between Medium and Large for posters. A bit to difficult to see on the tv. Why not just make it fully customizable?

Disclaimer this was fully vibe coded. Of course, I did test it .

1. This PR adds a "Badge scaling" parameter that modifies the input size by your desired amount.
2. It also modifies the way the Badges are anchored because the scaling wasn't centered for posters.

Yes, in the image the badges clip to the sides, but that's because all the ratings are at max digit length, which would never happen for an actual movie.

Therefore in practice it's not clipping the number but sometimes it clips the bounding box, which makes me want to group all ratings in the same rectangle background (like other poster services offer) to make it look better for this use case.

To do:

• Add separate scaling for margins (this is easy to see if setting scale to a large number, the gaps between the ratings and edges of the poster/background/logo also increase.
• Logo scaling works weird because rating background is wrapped around the whole image (exagerated scaling applied in the image below)
• Separate icon and text scaling
• Add solid strip background option (instead of having each rating in a box, they're all in the same "container", which is a strip from end to end of the poster)