feat: add :noweb-ref support for Org mode babel Elisp blocks

[takeokunn]

Summary

Add support for including Elisp code blocks with :noweb-ref attribute in tokenizeOrgModeBabelElisp'.

Relative Issue: nix-community/emacs-overlay#354

Changes

• Include Elisp code blocks that have :noweb-ref attribute, even without :tangle yes
• Update comments to reflect the new inclusion criteria

Motivation

In Org mode's literate programming workflow, :noweb-ref is used to name code blocks for inclusion via noweb syntax (<<block-name>>).
These blocks are essential for tangling but may not have :tangle yes set directly.

This change ensures that code blocks with :noweb-ref are properly tokenized and included in the output.

Test

$ nix-instantiate --eval --strict -E '
  let
    lib = import ./default.nix {};

    # Simulate literate config pattern
    testOrg = "
  * Package Configuration

  ** Evil Mode
  #+begin_src elisp :noweb-ref packages
  (use-package evil
    :ensure t
    :config
    (evil-mode 1))
  #+end_src

  ** Magit
  #+begin_src elisp :noweb-ref packages
  (use-package magit
    :ensure t)
  #+end_src

  ** Main Config
  #+begin_src elisp :tangle yes :noweb yes
  <<packages>>
  #+end_src
  ";

  in {
    parsed = lib.fromOrgModeBabelElisp testOrg;
    blockCount = builtins.length (lib.fromOrgModeBabelElisp testOrg);
  }
  '

{ blockCount = 3; parsed = [ [ "use-package" "evil" ":ensure" true ":config" [ "evil-mode" 1 ] ] [ "use-package" "magit" ":ensure" true ] "<<packages>>" ]; }

$