implement database and mqtt client to cache node info

prisma/schema.prisma

@@ -0,0 +1,35 @@
+// This is your Prisma schema file,
+// learn more about it in the docs: https://pris.ly/d/prisma-schema
+
+// Looking for ways to speed up your queries, or scale easily with your serverless or edge functions?
+// Try Prisma Accelerate: https://pris.ly/cli/accelerate-init
+
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "mysql"
+  url      = env("DATABASE_URL")
+}
+
+model Node {
+  id             BigInt  @id @default(autoincrement())
+  node_id        BigInt  @unique
+  long_name      String
+  short_name     String
+  hardware_model Int
+  is_licensed    Boolean
+  role           Int
+
+  latitude  Int?
+  longitude Int?
+  altitude  Int?
+
+  created_at DateTime @default(now())
+  updated_at DateTime @default(now()) @updatedAt
+
+  @@index(created_at)
+  @@index(updated_at)
+  @@map("nodes")
+}