feature(database-connection): First implementation

backend/package.json

@@ -20,10 +20,11 @@
     "test:e2e": "jest --config ./test/jest-e2e.json"
   },
   "dependencies": {
-    "@nestjs/common": "^7.0.0",
+    "@nestjs/common": "^7.6.5",
     "@nestjs/core": "^7.0.0",
     "@nestjs/platform-express": "^7.0.0",
-    "node-fetch": "^2.6.0",
+    "@prisma/client": "^2.14.0",
+    "node-fetch": "^2.6.1",
     "reflect-metadata": "^0.1.13",
     "rimraf": "^3.0.2",
     "rxjs": "^6.5.4",
@@ -33,6 +34,7 @@
     "@nestjs/cli": "^7.0.0",
     "@nestjs/schematics": "^7.0.0",
     "@nestjs/testing": "^7.0.0",
+    "@prisma/cli": "^2.14.0",
     "@types/express": "^4.17.3",
     "@types/jest": "25.1.4",
     "@types/node": "^13.9.1",