added suer to p-log, HUB_URL in hub-server, dynamic badges in email

packages/database/prisma/json/ParticipantLog.ts

@@ -0,0 +1,7 @@
+import { JsonValue } from "@prisma/client/runtime/library";
+
+export interface ParticipantLog {
+	event: string;
+	timestamp: Date;
+	user: string;
+}

packages/database/prisma/json/index.ts

@@ -0,0 +1 @@
+export type { ParticipantLog } from "./ParticipantLog";