chore: add all the code from original repo

prisma/migrations/20240123202859_added_exchange_rates_table_and_fields/migration.sql

@@ -0,0 +1,15 @@
+-- AlterTable
+ALTER TABLE "Item" ADD COLUMN     "priceEuro" DOUBLE PRECISION;
+
+-- CreateTable
+CREATE TABLE "CurrencyRate" (
+    "id" TEXT NOT NULL,
+    "currency" "Currency" NOT NULL,
+    "rate" DOUBLE PRECISION NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "CurrencyRate_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "CurrencyRate_id_key" ON "CurrencyRate"("id");