NNUE_EMBEDING_OFF as default

[rgen3]

Disables NNUE as default pod behavior

[veloce]

Why do you need that?

[rgen3]

Hi, sorry for the short description, let me explain
Setting up this plugin with nnue is not simple thing and unfortunately this plugin is not well documented.

So for me as a newby to capacitor and ios development really difficult to setup a plugin with downloading .nn file and including it to build process. So that, the only way I could install this plugin, was to find this constant and turn building with nnue off.

This PR I've opened as an example for other people, how to install and try stockfish in mobile development without painful installation of nn.

Maybe I should open an issue with documentation label and put this hack there

[veloce]

Sorry if I have not responded earlier. I agree that documentation is lacking here on how to embed the nn file, and it's not easy to find. I'll consider the default NNUE_EMBEDING_OFF but it should be done with a proper documentation and a warning of what are the differences when using or not NNUE.
So I'm creating an issue to tackle the documentation first.