feat: previewapplications init

apps/api/prisma/migrations/20220912142654_preview_applications/migration.sql

@@ -0,0 +1,17 @@
+-- AlterTable
+ALTER TABLE "Build" ADD COLUMN "previewApplicationId" TEXT;
+
+-- CreateTable
+CREATE TABLE "PreviewApplication" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "prMrId" TEXT NOT NULL,
+    "isRandomDomain" BOOLEAN NOT NULL DEFAULT false,
+    "customDomain" TEXT,
+    "applicationId" TEXT NOT NULL,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL,
+    CONSTRAINT "PreviewApplication_applicationId_fkey" FOREIGN KEY ("applicationId") REFERENCES "Application" ("id") ON DELETE RESTRICT ON UPDATE CASCADE
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "PreviewApplication_applicationId_key" ON "PreviewApplication"("applicationId");