doom: replace ctrlf with isearch+customizations

Making isearch interactive with transient is pretty good and by
modifying isearch I can get pretty close to what ctrlf offers already.
For heavier needs consult is already here and perfect. So, ctrlf, while
nice in providing what can be done with isearch, is no longer necessary.

modules/emacs/doom/config.org

@@ -146,8 +146,6 @@ Tangle ~packages.el~ from within org-mode.
 
 (package! org-modern)
 
-(package! ctrlf)
-
 (package! editorconfig)
 
 (package! jinx :type 'built-in :built-in 'prefer)
@@ -921,14 +919,14 @@ All the modifications that are necessary enough to exist, but not big enough to
    :after (consult)
    :desc "imenu" :g "C-:" #'consult-imenu))
 #+end_src
-** Ctrlf
+** ISearch
 #+begin_src emacs-lisp :lexical t
-(use-package! ctrlf
-  :demand t
-  :commands (ctrlf-mode)
+(use-package! isearch
   :after (transient)
   :config
-  (ctrlf-mode +1)
+  (setq isearch-lazy-count t
+        isearch-lazy-count-total t
+        isearch-lazy-count-current t)
   (transient-define-prefix b/isearch-menu ()
     "isearch Menu"
     [["Edit Search String"
@@ -997,8 +995,8 @@ All the modifications that are necessary enough to exist, but not big enough to
        isearch-occur
        :transient nil)]])
 
-  (map! (:map (ctrlf-mode-map)
-         :desc "isearch-menu" "C-." #'b/isearch-menu)))
+  (map! (:map (isearch-mode-map)
+         :desc "isearch-menu" "C-0" #'b/isearch-menu)))
 #+end_src
 
 ** Company