JOSS paper for the package

We discussed in one of the update meetings that there'll be a [JOSS paper](https://joss.readthedocs.io/en/latest/paper.html) for mesa-frames.

Do you mind creating a dedicated branch for it (e.g., `joss` or `paper` or any other branch name you prefer)? We can start creating PRs to that branch. It can then be merged into `main` when ready.

Start by reading the linked JOSS paper guidance and checking the mesa-frames repository's current branches. Create a dedicated paper branch, such as joss or paper, and confirm that it is available for pull requests and can later be merged into main.

Written by the indexing model from the issue text.