Add System and versions content template

I am not sure whether there is a good idea to put alternative answers in the second column of the template. As things evolve, these choices become outdated. This can only be updated by the customizations team, who have a lot on their hands.

The one about Drupal version is already outdated: 9.x and 8.x is past EOL and no longer eligible for community support. Also: There is no OS named "Linux". "Linux" is only a kernel. It is not a complete operating system – to work as an operating system, this kernel is usually distributed bundled with a lot of auxiliary programs created by the GNU project. This should be called "GNU/Linux", to knowledge the huge contribution from the GNU project. Also "Mac" and "Windows" are inaccurate, it is "macOS" and "Microsoft Windows". There are also other operating systems is use, such as BSD and various deivatives from it. Not everyone uses a dev system. Some people do development directly in the CLI of their operating system.

Instead I will suggest you just provide guidance about what to put in the second column:

Sure. I had a look at Composer's issue template. Maybe something like this, to also make the users delete less text:

Info about your system and details such as version

The new issue templates are set individually for every project, if this is for core issues then it should be move to Drupal Core.

I would recommend not using tables unless this is in a WYSIWYG editor, which GitLab issues are moving toward. The markup for tables is not friendly, even if it were markdown.

My thought was to use this template in the Forum, where already the "Core Task" template (the last one in the list) is available, which is using a table. So that's why I used that format. Do you think that it could work as a template in the Forum?