How to create a custom plugin?

How can I create a custom plugin?

Is there any documentation or way to process? Is it doable?

For instance, let’s say I’d like to be able to import a specific file format that is not supported yet. Or if I want to integrate with a third party that has no integration yet.

How can I do that? Any pointer or guideline?

Thank you!

Custom plugins are currently not supported. It is in our roadmap & expect it to be available by end of this year.