feat: basic api setup and boilerplate

backend/prisma/migrations/20260223105838_add_user/migration.sql

@@ -0,0 +1,14 @@
+-- CreateTable
+CREATE TABLE "User" (
+    "id" SERIAL NOT NULL,
+    "username" TEXT NOT NULL,
+    "password" TEXT NOT NULL,
+    "role" TEXT DEFAULT 'admin',
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "User_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "User_username_key" ON "User"("username");