[docs] Add new community content to the Material UI Learn page (#32927)
[docs] Add new community content to the Material UI Learn page (#32927)

Co-authored-by: Sam Sycamore <dfdf738b57048a441340e77236e86f1bbe6e346a@users.noreply.github.com>
Co-authored-by: danilo leal <63b756401c371cf61404028fef87ed5596fed5cf@users.noreply.github.com>
mui-org/material-ui,mui-org/material-ui,mui-org/material-ui