Support for LDtk

### Problem to solve

Is it possible to get support for LDtk?

I found [foamify/flame_ldtk](https://github.com/foamify/flame_ldtk), but it doesn’t seem to be actively maintained (?), and its license is also unclear.

As a similar alternative, there is [flame_tiled](https://pub.dev/packages/flame_tiled), but Tiled has been unstable on my Mac environment (this might just be an issue on my setup since I couldn’t find anyone else reporting the same error). For this reason, I'd like to try using LDtk.

### Proposal

On [LDtk's API page](https://ldtk.io/api/), it says:

> Can’t see your favorite framework or language? We have many solutions for you.

However, it doesn’t seem easy to implement.

### More information

_No response_

### Other

- [ ] Are you interested in working on a PR for this?