Version 0.9.9 gamma

Refactor HTML figure generation in Typst

- Updated the `kodama.typ` file to improve the structure of the `with-target-check` function, enhancing readability and maintainability.
- Modified the CSS in `main.css` to ensure consistent styling across various elements, including updates to class names and styles for better alignment with design specifications.
- Changed the image handling in `typst_image.rs` by renaming the `html_figure` function to `html_typst_figure` for clarity and consistency in the codebase.