feat: add relation for agent

prisma/migrations/20241028033825_update_structure/migration.sql

@@ -0,0 +1,15 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `agent` on the `CustomerBranch` table. All the data in the column will be lost.
+
+*/
+-- AlterTable
+ALTER TABLE "CustomerBranch" DROP COLUMN "agent",
+ADD COLUMN     "agentUserId" TEXT;
+
+-- AlterTable
+ALTER TABLE "ProductGroup" ADD COLUMN     "shared" BOOLEAN NOT NULL DEFAULT false;
+
+-- AddForeignKey
+ALTER TABLE "CustomerBranch" ADD CONSTRAINT "CustomerBranch_agentUserId_fkey" FOREIGN KEY ("agentUserId") REFERENCES "User"("id") ON DELETE SET NULL ON UPDATE CASCADE;