Finalized Pre-Hack API

(plz no break)

What's Changed

• Move s3 to middleware by @Timothy-Gonzalez in #153
• Added resume filename field by @AydanPirani in #154
• updated avatar mapping, enums by @lasyaneti in #155
• added mapImageURL by @aletya in #147
• Refactor database init & testing framework by @Timothy-Gonzalez in #159
• Converted static CORS into middleware, and added to all routers by @AydanPirani in #161
• Upgrade aws sdk to v3 by @Timothy-Gonzalez in #163
• Add enum validation to registration by @Timothy-Gonzalez in #165
• Codebase Clean-Up + MapURL by @AydanPirani in #164
• Added registration tests by @AydanPirani in #167
• Final RSVP nits by @AydanPirani in #168
• Registration: web requested empty str by @lasyaneti in #169
• Updated Registration Validation per Web's Request by @lasyaneti in #170
• Improve registration tests & add /submit/ tests by @Timothy-Gonzalez in #171
• RSVP, Status Update emails by @lasyaneti in #172
• Fix GET /event discrepancy by @lasyaneti in #173
• GET user ranking endpoint by @npunati27 in #158
• Added staff events by @akulsharma1 in #174
• Fixed auth tests + renamed Authorization by @AydanPirani in #176
• Dev/aydan/post presigned urls by @AydanPirani in #177
• adding log statements for bad requests by @lasyaneti in #178
• Added PRO role & adjusted GET /event by @akulsharma1 in #181
• Staff scans attendee + Attendee scans event endpoints by @aletya in #184
• minor nits to staff shifts + event endpoint by @AydanPirani in #186
• fixed events format by @AydanPirani in #187
• Added Staff Shift documentation by @akulsharma1 in #188
• Dev/alex/mentor office hours qr by @aletya in #166
• Checkin Nits by @lasyaneti in #189
• added foodwaves by @aletya in #191
• fixed PUT /staff/scan-attendee by @aletya in #190
• Exclude STAFFSHIFT in GET /event by @lasyaneti in #192
• Testing admissions by @lasyaneti in #194
• Added notifs service by @AydanPirani in #193
• hotfix by @aletya in #195
• SHOP: return name of purchased item by @lasyaneti in #198
• Fix follow not creating followers by @Timothy-Gonzalez in #197
• adjusted GET /user/following by @akulsharma1 in #196
• Notif Fixes by @AydanPirani in #199
• Final Nit Changes by @AydanPirani in #201
• Update points and coins simultaneously by @AydanPirani in #202
• Resolve points (for mobile) by @AydanPirani in #203
• Puzzle Service MVP by @lasyaneti in #200
• Speed up notifs by cleaning up Mongo query by @AydanPirani in #204

Full Changelog: v2.0.0...v3.0.0