Add GPL3 license to relevant apps and root

[rrrliu]

No description provided.

[artwyman]

Can you also review the package.json files to see if they include the right license specifier? I didn't review them all, but it looks like anon-message-client at least doesn't have a license in its package.json at all.

Something I wonder (but don't know for sure because IANAL) is whether we need to specify a license at the top-level at all, and which license it should be. We have a mix of MIT-licensed packages and GPL-licensed packages in this repo, and I'm not sure how the precedence is supposed to work for a top-level license. I might've gone with an MIT license as default, assuming it only covers things like our tsconfig and other things which aren't in a specific package with its own license.

[rrrliu]

Can you also review the package.json files to see if they include the right license specifier? I didn't review them all, but it looks like anon-message-client at least doesn't have a license in its package.json at all.

Fixed, thanks for the heads up.

Something I wonder (but don't know for sure because IANAL) is whether we need to specify a license at the top-level at all, and which license it should be. We have a mix of MIT-licensed packages and GPL-licensed packages in this repo, and I'm not sure how the precedence is supposed to work for a top-level license. I might've gone with an MIT license as default, assuming it only covers things like our tsconfig and other things which aren't in a specific package with its own license.

After some minor research [0] [1] [2], it looks like setting GPL3 as the default top-level license is probably the safest option. Of course IANAL so quick confirmation with lawyers could make sense here.

[0] https://opensource.stackexchange.com/questions/13029/how-mixing-mit-licensed-code-with-gplv3-project-works
[1] https://www.thehyve.nl/articles/open-source-software-licenses-part-3
[2] https://qr.ae/p27bPN