Add denote link type

[jarofromel]

Hello,
I use denote (note-taking approach in emacs) which uses its own link type.
The notes (files) have file-naming scheme -> 20200927T000622--awk-learning-sources.org.
The link to this file is [[denote:20200927T000622][awk learning sources]], so it is like the file type link but only the first part (yyyymmddThhmmss) is used in the link.
Also the link can contain heading part -> [denote:20200927T000622::*heading] or [denote:20200927T000622::#CUSTOM-ID].

I understand that adding custom link types besides org ones is extra work. My arguments are that Denote with Org-roam are probably most popular note-taking packages (in Emacs ecosystem), and maybe that implementation would be similar to file link type (my guess).

Thank for potentially considering this issue. Also thanks for very useful app it helps a lot with using my notes in Android.

[amake]

Some issues I see:

• Orgro will not know how to resolve denote-directory. If it is a flat directory and the current document is inside denote-directory then it will just be ./, but any other cases are unclear.
• To compute the actual filename it looks like I would have to completely reimplement the sluggification logic
• Even with all of the above solved, there are numerous ways to customize the mapping between link and filename (signatures, denote-file-name-components-order, etc.). All of this would need to be reimplemented.

Supporting all of this would be outside of Orgro's remit. If there is a reasonable subset then I might consider it, if it would be of significant value to users.

[amake]

Denote's core link-resolving logic requires recursively iterating over all files in denote-directory looking for the one with the portion considered an ID.

  denote--directory-all-files-recursively()
  denote--directory-get-files()
  denote-directory-files()
  denote-get-path-by-id("20250103T082129")
  denote-link--ol-resolve-link-to-target("20250103T082129::#h:9B4FF9B7-4BA2-4B09-84F1-907A2AB35BD4")
  (org-link-open-as-file (denote-link--ol-resolve-link-to-target link) nil)
  denote-link-ol-follow("20250103T082129::#h:9B4FF9B7-4BA2-4B09-84F1-907A2AB35BD4")
  org-link-open((link (:standard-properties [116 nil 183 197 199 0 nil nil nil nil nil nil nil nil #<buffer 20250103T082153--another-test__done.org> nil nil (paragraph (:standard-properties [116 116 116 200 200 0 nil nil element t nil nil nil nil #<buffer 20250103T082153--another-test__done.org> nil nil (section ...)]))] :type "denote" :type-explicit-p t :path "20250103T082129::#h:9B4FF9B7-4BA2-4B09-84F1-907A2AB35BD4" :format bracket :raw-link "denote:20250103T082129::#h:9B4FF9B7-4BA2-4B09-84F1-907A2AB35BD4" :application nil :search-option nil)) nil)
  org-open-at-point(nil)
  funcall-interactively(org-open-at-point nil)
  command-execute(org-open-at-point)

This is quite cumbersome on iOS and Android.