feat: add team page & reusable executive cards component

[jzchenn]

• Created and routed /team page
• Built reusable template card, MemberInfo.tsx, to display images, names and social links.
• Added NavLink to the team page
• useEffect updates browser tab title when team page opens

[alannasantoso]

looks really good! very responsive which is awesome

just one thing to add: could we get a "role" for each exec member as well - in practice, we would want to put the role of each exec member on the site, and maybe organise them by role too (i.e. social comm, president, co-president)

you can look on the team section of https://www.umsanz.com/ if you need a bit of clarification on what I mean!

[jzchenn]

• Added roles