Chatroom: Add winston

[fhelfer]

This PR adds winston as NPM dependency for the chatroom.

General Information:

• this dependency was already used in ILIAS.
• License: MIT

Usages:

• components/ILIAS/Chatroom/chat/Bootstrap/SetupEnvironment.js (instance creation and configuration)
• components/ILIAS/Chatroom/chat/* The logger instance is used in many JS files.

Wrapped By:

• Not applicable

Reasoning:

winston is a logging library for the Node.js based ILIAS chat server, similar to Monolog, which we use in ILIAS for server-side logging. It supports multiple transport channels and logging levels (compliant to RFC5424, see: https://datatracker.ietf.org/doc/html/rfc5424).

Maintenance:

winston is a well maintained package with major releases every few years. It is an active project.
(The latest release is from the 01.10.2025)

Links:

• NPM: https://www.npmjs.com/package/winston
• GitHub: https://github.com/winstonjs/winston
• Documentation: https://github.com/winstonjs/winston?tab=readme-ov-file#usage

[matthiaskunkel]

Jour Fixe, 08 DEC 2025: Dependency is accepted for ILIAS 12.

[lscharmer]

Merged with PR: #11262