Add sub-folder param to near-operation-file

[fforres]

I was wondering if there was a way we could create a sub-folder to save all our code-generated files instead of just appending them into the same folder, and I stumbled across #2287 issue / comment by @RIP21.

And since I had a bit of free time, I made a PR for it

• A added a new optional option folder to the near-operation-file config
• It sets a relative sub-folder where to save the files generated by the code-generator.

Once thing I didn't know how to (Or what does the project use them for) is the files under dev-test.
I did modified the ./dev-test/githunt option under dev-test/codegen.yml option to test the plugin changes there... Buts I guess there must be a better option?

Anyways, Looking forward to comments / inputs on the PR.

All the best!

cc @dotansimha

[dotansimha]

That's AWESOME!!! Thank you so much @fforres ! Looks great.