feat: Add tenant table/logic (#50)

prisma/migrations/20250115025622_add_tenant_table/migration.sql

@@ -0,0 +1,39 @@
+/*
+  Warnings:
+
+  - The primary key for the `User` table will be changed. If it partially fails, the table could be left without primary key constraint.
+  - A unique constraint covering the columns `[clerkId,tenantId]` on the table `User` will be added. If there are existing duplicate values, this will fail.
+  - Added the required column `tenantId` to the `User` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- DropIndex
+DROP INDEX "User_clerkId_key";
+
+-- AlterTable
+ALTER TABLE "User" DROP CONSTRAINT "User_pkey",
+ADD COLUMN     "tenantId" TEXT NOT NULL,
+ADD CONSTRAINT "User_pkey" PRIMARY KEY ("id", "tenantId");
+
+-- CreateTable
+CREATE TABLE "Tenant" (
+    "id" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "slug" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+    "clerkOrganizationId" TEXT NOT NULL,
+
+    CONSTRAINT "Tenant_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Tenant_slug_key" ON "Tenant"("slug");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Tenant_clerkOrganizationId_key" ON "Tenant"("clerkOrganizationId");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "User_clerkId_tenantId_key" ON "User"("clerkId", "tenantId");
+
+-- AddForeignKey
+ALTER TABLE "User" ADD CONSTRAINT "User_tenantId_fkey" FOREIGN KEY ("tenantId") REFERENCES "Tenant"("id") ON DELETE RESTRICT ON UPDATE CASCADE;