WIP - multitenant initial work

backend/src/prisma/central-prisma.service.ts

@@ -0,0 +1,16 @@
+import { PrismaClient as CentralPrismaClient } from '.prisma/central';
+
+let centralPrisma: CentralPrismaClient;
+
+export function getCentralPrisma(): CentralPrismaClient {
+  if (!centralPrisma) {
+    centralPrisma = new CentralPrismaClient();
+  }
+  return centralPrisma;
+}
+
+export async function disconnectCentral() {
+  if (centralPrisma) {
+    await centralPrisma.$disconnect();
+  }
+}