feat(core): support org-enforce-todo-dependencies

[PannenetsF]

Hi guys, I just impl the option for org-enforce-todo-dependencies, which will prevent parent TODOs from toggling when it has some unfinished children.

I am not sure if you are still interested in it, as the related issue https://github.com/nvim-orgmode/orgmode/issues/274 was updated 2 years ago.

Here comes the reference. https://orgmode.org/manual/TODO-dependencies.html

:)