Add a Posts Schema just to test authentication

api/db/migrations/20241004073828_intoroduce_posts_schema/migration.sql

@@ -0,0 +1,8 @@
+-- CreateTable
+CREATE TABLE "Post" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "title" TEXT NOT NULL,
+    "body" TEXT NOT NULL,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL
+);