Add GNU General Public License v3 to LICENSE.md

[szschaler]

No description provided.

[szschaler]

@alxbrd I noticed there isn't a license on this repo. As we're currently building on it in a different project, I thought it would be good to add one. I'm assuming you will be happy with GPL, but wanted to give you a chance to object. I'll leave this PR open for a week (until March 31st). If I haven't heard from you before then, I will go ahead and merge it in.

[Copilot]

Pull request overview

Adds the GNU General Public License v3 text as the repository’s LICENSE.md, establishing GPLv3 as the intended licensing basis for the project.

Changes:

• Added a new LICENSE.md containing the full GNU GPL v3 (29 June 2007) license text.

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[alxbrd]

@szschaler Thanks for the PR. I would avoid GPL and would suggest MIT or Apache instead.

[szschaler]

Thanks. Why?

[alxbrd]

MIT and Apache are more permissive with fewer obligations on redistribution vs GPL.

[nk-coding]

(disclaimer: I'm the person working on this different project)
maybe EPL-2.0 would be a good common ground as a weak copyleft license
could still easily redistribute it without too much obligation, but if you modify the code itself you still need to provide it under the same license
Also this license seems to be really common among the Eclipse model-driven projects