Add ShareIcons component to website repo

[hs4man21]

– Clone stanforddaily repo and make sure you can run it locally on your machine
– cd into repo's components dir and then enter "touch ShareIcons.tsx" to create file for ShareIcons component
– Paste in the code from your existing ShareIcons component and adapt to fit TypeScript (Don't hesitate to ask for help!)
– Once component is working, navigate to the file ContentView.tsx, import your component and add below
– Run the code using yarn and check out a post at localhost:3000 to see the ShareIcons component in action
– Celebrate!