Added swagger and config read

backend/config/index.ts

@@ -0,0 +1,20 @@
+import { config as configInit } from 'dotenv';
+
+configInit();
+
+export const config = {
+    database: {
+        type: 'postgres',
+        host: process.env.DATABASE_HOST || 'localhost',
+        port: +process.env.DATABASE_PORT || 5432,
+        username: process.env.DATABASE_USERNAME || 'postgres',
+        password: process.env.DATABASE_PASSWORD || '',
+        database: process.env.DATABASE_DB || 'bot_db',
+        synchronize: true,
+        logging: false,
+        autoLoadEntities: true,
+    },
+    server: {
+        port: +process.env.SERVER_PORT || 8080,
+    },
+};