Chatroom: Add mysql2

[lscharmer]

This PR adds mysql2 as NPM dependency for the chatroom.

General Information:

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

Usages:

• components/ILIAS/Chatroom/chat/Persistence/Database.js

Wrapped By:

• Database (see: components/ILIAS/Chatroom/chat/Persistence/Database.js)

Reasoning:

This dependency is a replacement for the mysql dependency, which was not updated since 2022, as noted in the dependency PR for ILIAS 10: #6773.

mysql2 is a mysql driver for Node.js. It is used to communicate with a mysql (or mariadb) server.

Maintenance:

mysql2 is actively maintained and regularly updated (The latest release is from 28.11.2024).

Links:

• NPM: https://www.npmjs.com/package/mysql2
• GitHub: https://github.com/sidorares/node-mysql2
• Documentation: https://sidorares.github.io/node-mysql2/docs/documentation

[kergomard]

We would kindly ask @lscharmer and @mjansenDatabay to see if https://www.npmjs.com/package/mariadb would be a valid solution. If possible we would prefer this solution. If not, we accept this dependency for ILIAS 11.

[mjansenDatabay]

This PR can be closed, we proposed to add mariadb as alternative for mysql, see #8749