Handle resume & founders agreement file upload in TeamMembers.tsx

[juancwu]

Description

Add file upload component for both resume and founders agreement.

Had to add a new route to handle the team member documents since they are not really tied to a project, but instead just a team member instance.

Linked Issues

• Fixes [Bug] Add the file upload component to the team member resume question #389

Checklist

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[aidantrabs]

lgtm