Support inline code

[edityomurti]

Regarding flutter_quill 2.5.0 now support inline code, any chance consider supporting inline code?

I'd love to make PR but I don't know where to start, a hint/guide would be appreciated.

[friebetill]

Thanks for the request! Unfortunately I don't have time at the moment.

If you would solve the problem before, I suggest you write the respective tests in delta_markdown/test/delta_to_markdown_test.dart and in delta_markdown/test/markdown_to_delta_test.dart. Then you can simply set a breakpoint and go through the algorithm step by step until you notice where to extend the algorithm.