Make `.goosehints` in cwd viewable and editable in Desktop app

[lily-de]

Please explain the motivation behind the feature request. People like to use .goosehints to guide how goose behaves in a particular project (e.g. specify files to pay attention to, describe to goose certain workflows, specify a testing framework to use when writing tests, etc). It would be a nice-to-have to see any goosehints if they are present in the current-working-directory in the UI

Describe the solution you'd like Not sure where this would live necessarily -- burying it into the settings or an icon at the bottom bar of the chat window which appears if you have a goosehints in that directory makes initial sense to me, but we should ask @nahiyankhan or Spencer as the designers

Clicking on a button would open up a simple text editor window with the goosehints. The window has a save or cancel button for handling edits. Clicking either of these would close the window.