Init DB and Tests with Components

- add Artikel, Kauf, Kategorie Model
- generate Components
- playing with custom components
- add Tailwindcss

api/db/migrations/20231105162730_/migration.sql

@@ -0,0 +1,24 @@
+-- CreateTable
+CREATE TABLE "artikel" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "name" TEXT NOT NULL,
+    "preis" REAL
+);
+
+-- CreateTable
+CREATE TABLE "kauf" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "timestamp" INTEGER NOT NULL,
+    "preis_ges" REAL
+);
+
+-- CreateTable
+CREATE TABLE "kauf_artikel" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "kauf_id" INTEGER NOT NULL,
+    "artikel_id" INTEGER NOT NULL,
+    "anzahl" INTEGER NOT NULL
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "artikel_name_key" ON "artikel"("name");