merge /user/* and more endpoints

[lkekana]

implemented the following endpoints:

GET /users/rooms (to get a user's rooms) POST /users/rooms (to create a new room) GET /users/rooms/recent (see a user's recent rooms) GET /users/rooms/foryou (get recommended rooms. random for now) GET /users/friends (get a user's friends) GET /users/following (get a user's following) GET /users/followers (get a user's followers) GET /rooms/new (to get newly created rooms) POST /profile/{username}/follow (to follow an account) POST /profile/{username}/follow (to unfollow an account)

as well as revised POST /auth/login to use the Cognito access token for simplicity and added POST /auth/register to handle registration & adding user to db

all tested as well

note: my commits are fewer here bc Linda merged my branch into dev prematurely

[gitguardian[bot]]

⚠️ GitGuardian has uncovered 2 secrets following the scan of your pull request.

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🔎 Detected hardcoded secrets in your pull request

| GitGuardian id | GitGuardian status | Secret | Commit | Filename | | | -------------- | ------------------ | ------------------------------ | ---------------- | --------------- | -------------------- | | [11683612](https://dashboard.gitguardian.com/workspace/301252/incidents/11683612?occurrence=146052070) | Triggered | Generic High Entropy Secret | cb7e4b20a87f4e6a558b4a89b38b2fcfadb6776e | backend/tools/simulate-auth.js | [View secret](https://github.com/COS301-SE-2024/TuneIn/commit/cb7e4b20a87f4e6a558b4a89b38b2fcfadb6776e#diff-6b784f911043fa5986dce294ce3100458650a1de36a2c924bd5b0566b2d33022R53) | | [11683613](https://dashboard.gitguardian.com/workspace/301252/incidents/11683613?occurrence=146052071) | Triggered | Bearer Token | cb7e4b20a87f4e6a558b4a89b38b2fcfadb6776e | backend/tools/simulate-auth.js | [View secret](https://github.com/COS301-SE-2024/TuneIn/commit/cb7e4b20a87f4e6a558b4a89b38b2fcfadb6776e#diff-6b784f911043fa5986dce294ce3100458650a1de36a2c924bd5b0566b2d33022R50) |

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