Improve OpenID login flow security

prisma/migrations/20231206231959_add_issuer_and_client_to_flows/migration.sql

@@ -0,0 +1,12 @@
+/*
+  Warnings:
+
+  - Added the required column `issuerId` to the `OpenIdLoginFlow` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- AlterTable
+ALTER TABLE "OpenIdLoginFlow" ADD COLUMN     "applicationId" UUID,
+ADD COLUMN     "issuerId" TEXT NOT NULL;
+
+-- AddForeignKey
+ALTER TABLE "OpenIdLoginFlow" ADD CONSTRAINT "OpenIdLoginFlow_applicationId_fkey" FOREIGN KEY ("applicationId") REFERENCES "Application"("id") ON DELETE CASCADE ON UPDATE CASCADE;

prisma/migrations/20231206232131_make_client_id_unique/migration.sql

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+/*
+  Warnings:
+
+  - A unique constraint covering the columns `[client_id]` on the table `Application` will be added. If there are existing duplicate values, this will fail.
+
+*/
+-- CreateIndex
+CREATE UNIQUE INDEX "Application_client_id_key" ON "Application"("client_id");