Basic transaction system

api/db/migrations/20231107224945_transaction/migration.sql

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+-- CreateEnum
+CREATE TYPE "TransactionType" AS ENUM ('in', 'out');
+
+-- CreateTable
+CREATE TABLE "Transaction" (
+    "id" SERIAL NOT NULL,
+    "date" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "userId" INTEGER NOT NULL,
+    "type" "TransactionType" NOT NULL,
+    "parts" JSONB[],
+
+    CONSTRAINT "Transaction_pkey" PRIMARY KEY ("id")
+);
+
+-- AddForeignKey
+ALTER TABLE "Transaction" ADD CONSTRAINT "Transaction_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE;