Hot keys for jumping between the panel and the editor

> Scanning the rest of the items. I think those fixes will help solve many of the issues. These though look more like design or research questions?

> - "Add hot keys in the app to make jumping between the panel and the editor faster and easier to go back and forth"
> - Potentially a dev small lift but depends on how far we go with this. e.g. where to put an app-wide help/legend area for more "global" keys

_Originally posted by @thiessenp-cds in [#6015](https://github.com/cds-snc/platform-forms-client/issues/6015#issuecomment-3267382751)_