feat: React Setup, data donations feature and api docs fixes

[lalit97]

design for data donation

[lalit97]

• Issue #53

  • React initial setup
  • add a new fileUpload component
  • CSS for data donation feature

• Issue #51

  • Change schema to make data donation more user friendly
  • Change management command and 1-time script to work with the new schema
  • Refactor API docs to add more messages for users
  • Refactor serializers and views to work with the new schema

• Issue #46

  • New API for data donation