Replace Social Links TBD on Footer with social link icons

**Is your feature request related to a problem? Please describe.**
Many students and young adults interested in helping or advocating to implement restorative justice in Milwaukee use social platforms over email and website forums. We need to communicate progress about features and where we need help to yound technologists, developers, and marketers. Therefore, I (@paul-rinaldi ) will likely create a Twitter, Facebook, and Instagram for WDP once this issue is finished; and so, **the only ask on this issue is to add a Facebook, Twitter, and Instagram icon with default links to those websites**

**Describe the solution you'd like**
- Replace "social links tbd" with material ui icons (or ionicons etc.) of Facebook, Twitter, and Instagram icon with default links to those websites
- The icons should have enough spacing between each other but not be too far apart
- The color should be white outline or black outline, not filled icons

**Describe alternatives you've considered**
None

**Additional context**
None

Localiza el pie de página y el texto existente "social links tbd"; después, inspecciona cómo el frontend de JavaScript/React renderiza los enlaces y los iconos del pie de página. Se considera terminado cuando los iconos de Facebook, Twitter e Instagram aparezcan con enlaces web predeterminados, un espaciado adecuado y un estilo delineado en lugar de relleno.

Escrito por el modelo de indexación a partir del texto del issue.