Add code donation guidelines

[cb1kenobi]

Document the ability for people to donate their Titanium-related projects, modules, packages, etc to be owned by the TiDev org. TiDev can provide infrastructure for hosting and supporting code that others no longer wish to maintain.

[joshualambert]

Loose Ideas around this:

1.) When we take on a project, we update the README to say that TiDev is now overseeing the project and that we’re looking for volunteer contributors to help maintain the project going forward.
2.) We create issues of things on the TiDev version of the repository that we know need to be done in order to stabilize the code donated to us.
3.) We need some kind of legal release granting the TiDev foundation ownership/control/whatever and ensure all code that comes in is clear for use in open-source stuff. (may need to consult legal on what this would look like. IP clearance I guess is what you might call this.)

Examples:
https://www.apache.org/foundation/how-it-works/legal.html
https://openjsf.org/projects/