oc: style UI with latex-focused option

[bdarcus]

I haven't really gotten much feedback on the org-cite style editing UI.

But if, by chance, hard-core latex users have a hard time getting used to the org-cite style names, even with the preview, here's another option; a configurable option to flip the mapping, and instead have the latex commands central in the UI.

I still think dynamic preview is the more important first step, but worth considering?

(defcustom oc-bibtex-actions-style-ui 'oc
  "Style select UI; each with a preview."
  :type '(choice (const :tag "org-cite styles" 'oc)
                 (const :tag "biblatex commands" 'biblatex)
                 (const :tag "natbib commands" 'natbib)))

(defvar oc-bibtex-actions--style-mapping
  '(("autocite"  . "/")
    ("textcite" . "/text")))

(defvar oc-bibtex-actions--style-prompt "BibLaTeX citation command: ")

(defun latex-oc-style-choose ()
  (let ((choice
          (completing-read 
           oc-bibtex-actions--style-prompt
           oc-bibtex-actions--style-mapping)))
    (cdr (assoc choice oc-bibtex-actions--style-mapping))))