* render navbar only if window is wider than breakpoint

* render (non-functional) burger menu below breakpoint

* classes

* implement useWindowSize hook

* fixed toolbar elements staying on the right

* fixed licensing button moving when nav bar condenses

* maintain padding at narrow resolutions

* burger menu click open drawer

* added functional but unstyled burger draw

* basic styling

* present material themes in one column when window width less than columnBreakpoint

* added padding to 'material themes' title

* footer condenses awkwardly below media breakpoint, changed to flex below md: for better themebutton positioning

* fixed ThemeSwitcher positioning in flex div

* minor footer placement fix

* added burger drawer material  indentation

* burger drawer styling improvements

* add dark mode to burger drawer

* add dark mode to burger drawer (and run prettify on footer.tsx)

… components

The code changes include adding the `CourseGrid` component to to use a mui grid rather than the react-flow diagram

This commit refactors the Layout component to use the MuiTheme from the @mui/material library for theming. It adds the necessary imports for the useTheme, ThemeProvider, and CssBaseline components. It also introduces the LightTheme and DarkTheme objects in the MuiTheme file, which define the color palette and styling for the light and dark themes respectively.

adds`NavDiagram` component to the to see the full repo layout via a link from /material

This commit adds the getStaticPaths function to the diagram.tsx file in the pages/material/[repoId]/[themeId] directory. The function generates the paths for the dynamic routes based on the material data retrieved from the getMaterial function. Each path corresponds to a specific combination of repoId, themeId, and courseId. This change ensures that the dynamic routes are properly generated and accessible for the material pages.

…berg into subsections-and-headings