refactor: build system

backend/backend/tsconfig.json

@@ -1,13 +1,10 @@
 {
-  "extends": "./node_modules/@openstapps/configuration/tsconfig.json",
+  "extends": "@openstapps/tsconfig",
   "compilerOptions": {
     "resolveJsonModule": true,
     "skipLibCheck": true,
     "useUnknownInCatchVariables": false,
     "lib": ["ES2020"]
   },
-  "exclude": [
-    "./config/",
-    "./test"
-  ]
+  "exclude": ["./config/", "./test"]
 }