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/backend/server/src/fundamentals/nestjs/optional-module.ts

@@ -9,7 +9,7 @@ import { omit } from 'lodash-es';
 
 import { Config, ConfigPaths } from '../config';
 
-interface OptionalModuleMetadata extends ModuleMetadata {
+export interface OptionalModuleMetadata extends ModuleMetadata {
   /**
    * Only install module if given config paths are defined in AFFiNE config.
    */