Plugin submission requires a few areas to be covered.
First there needs to be a plugin SWC formatted correctly with a unique plugin id and descriptor file. You can find out more about setting up your plugin here.
If you have built a plugin into GBS you should have tested your plugin and need to provide a sample GBS project file for the end-user to test out what your plugin does. Putting this sample project up on the internet and providing a demo link is highly recommended.
All plugins need to have some basic documentation explaining how to use your plugin. Make sure to cover any hidden gotchas that the end-user needs to account for.
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