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/plugins/storage/index.ts

@@ -1,5 +1,5 @@
-import { OptionalModule } from '../../fundamentals';
 import { registerStorageProvider } from '../../fundamentals/storage';
+import { Plugin } from '../registry';
 import { R2StorageProvider } from './providers/r2';
 import { S3StorageProvider } from './providers/s3';
 
@@ -18,7 +18,8 @@ registerStorageProvider('aws-s3', (config, bucket) => {
   return new S3StorageProvider(config.plugins['aws-s3'], bucket);
 });
 
-@OptionalModule({
+@Plugin({
+  name: 'cloudflare-r2',
   requires: [
     'plugins.cloudflare-r2.accountId',
     'plugins.cloudflare-r2.credentials.accessKeyId',
@@ -28,7 +29,8 @@ registerStorageProvider('aws-s3', (config, bucket) => {
 })
 export class CloudflareR2Module {}
 
-@OptionalModule({
+@Plugin({
+  name: 'aws-s3',
   requires: [
     'plugins.aws-s3.credentials.accessKeyId',
     'plugins.aws-s3.credentials.secretAccessKey',