refactor(server): auth (#5895)

Remove `next-auth` and implement our own Authorization/Authentication system from scratch.

## Server

- [x] tokens
  - [x] function
  - [x] encryption

- [x] AuthController
  - [x] /api/auth/sign-in
  - [x] /api/auth/sign-out
  - [x] /api/auth/session
  - [x] /api/auth/session (WE SUPPORT MULTI-ACCOUNT!)

- [x] OAuthPlugin
  - [x] OAuthController
  - [x] /oauth/login
  - [x] /oauth/callback
  - [x] Providers
    - [x] Google
    - [x] GitHub

## Client

- [x] useSession
- [x] cloudSignIn
- [x] cloudSignOut

## NOTE:

Tests will be adding in the future

packages/frontend/core/package.json

@@ -78,7 +78,6 @@
     "lottie-web": "^5.12.2",
     "mini-css-extract-plugin": "^2.8.0",
     "nanoid": "^5.0.6",
-    "next-auth": "^4.24.5",
     "next-themes": "^0.2.1",
     "postcss-loader": "^8.1.0",
     "react": "18.2.0",