selectrum: improve ivy parity

- add `completion-at-point` as analogue to `cousnel-company`
- fix emacs-bindings `counsel-company` binding to respect helm and selectrum
- add org jump commands `consult-org-heading` and `consult-org-agenda` bindings
- add `consult-history` as `counsel-minibuffer-history` analogue
- add support for `doom/help-search`
- update TODO.org

modules/lang/org/config.el

@@ -724,6 +724,9 @@ between the two."
         (:when (featurep! :completion helm)
          "." #'helm-org-in-buffer-headings
          "/" #'helm-org-agenda-files-headings)
+        (:when (featurep! :completion selectrum)
+         "." #'consult-org-heading
+         "/" #'consult-org-agenda)
         "A" #'org-archive-subtree
         "e" #'org-export-dispatch
         "f" #'org-footnote-new
@@ -807,6 +810,9 @@ between the two."
          (:when (featurep! :completion helm)
           "g" #'helm-org-in-buffer-headings
           "G" #'helm-org-agenda-files-headings)
+         (:when (featurep! :completion selectrum)
+          "g" #'consult-org-heading
+          "G" #'consult-org-agenda)
          "c" #'org-clock-goto
          "C" (cmd! (org-clock-goto 'select))
          "i" #'org-id-goto