I’m going to quote you the readme from the linked github repo:
Allow the unwashed masses to use Org, without using Emacs, using Emacs.
Here’s the image from the readme
And here’s the first line from the first result of a google search for &ldquoLSP”:
The Language Server Protocol (LSP) defines the protocol used between an editor or IDE and a language server that provides language features like auto complete, go to definition, find all references etc.
That should give you an idea of the intent here.
All the best,