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

Finde den Footer und den vorhandenen Text „social links tbd“ und prüfe anschließend, wie das JavaScript/React-Frontend Footer-Links und Icons rendert. Erledigt ist die Aufgabe, wenn die Icons für Facebook, Twitter und Instagram mit Standard-Website-Links, angemessenem Abstand und als Umriss statt ausgefüllt erscheinen.

Vom Indexierungsmodell aus dem Issue-Text verfasst.