feat: Basic setup with auth

src/main.ts

@@ -1,10 +1,47 @@
 import { NestFactory } from '@nestjs/core';
 import { AppModule } from './app.module';
 import { ConfigService } from '@nestjs/config';
+import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
 
+  const swaggerConfig = new DocumentBuilder()
+    .setTitle('Kaa Khane')
+    .setDescription(`API Documentation for Kaa Khane`)
+    .setVersion('0.0.1')
+    .addGlobalResponse(
+      {
+        status: 500,
+        description: 'Internal Server Error',
+      },
+      {
+        status: 401,
+        description: 'Unauthorized',
+      },
+      {
+        status: 403,
+        description: 'Forbidden',
+      },
+    )
+    .addBearerAuth(
+      {
+        type: 'http',
+        scheme: 'bearer',
+        bearerFormat: 'JWT',
+      },
+      'access-token',
+    )
+    .build();
+
+  const documentFactory = () =>
+    SwaggerModule.createDocument(app, swaggerConfig);
+  SwaggerModule.setup('/docs', app, documentFactory, {
+    swaggerOptions: {
+      persistAuthorization: true,
+    },
+  });
+
   const config = app.get(ConfigService);
   const port = config.get<number>('PORT') ?? 3000;