💥 Remove :feature category

:feature was a "catch-all" category. Many of its modules fit better in
other categories, so they've been moved:

- feature/debugger -> tools/debugger
- feature/evil -> editor/evil
- feature/eval -> tools/eval
- feature/lookup -> tools/lookup
- feature/snippets -> editor/snippets
- feature/file-templates -> editor/file-templates
- feature/workspaces -> ui/workspaces

More potential changes in the future:

- A new :term category for terminal emulation modules (eshell, term and
  vterm).
- A new :os category for modules dedicated to os-specific functionality.
  The :tools macos module would fit here, but so would modules for nixos
  and arch.
- A new :services category for web-service integration, like wakatime,
  twitter, elfeed, gist and pastebin services.

modules/editor/multiple-cursors/autoload/evil-mc.el

@@ -1,5 +1,5 @@
 ;;; editor/multiple-cursors/autoload/evil-mc.el -*- lexical-binding: t; -*-
-;;;###if (featurep! :feature evil)
+;;;###if (featurep! :editor evil)
 
 ;;;###autoload
 (defun +multiple-cursors/evil-mc-toggle-cursors ()

modules/editor/multiple-cursors/config.el

@@ -1,7 +1,7 @@
 ;;; editor/multiple-cursors/config.el -*- lexical-binding: t; -*-
 
 (def-package! evil-mc
-  :when (featurep! :feature evil)
+  :when (featurep! :editor evil)
   :commands (evil-mc-make-cursor-here evil-mc-make-all-cursors
              evil-mc-undo-all-cursors evil-mc-pause-cursors
              evil-mc-resume-cursors evil-mc-make-and-goto-first-cursor
@@ -65,7 +65,7 @@
   ;; mc doesn't play well with evil, this attempts to assuage some of its
   ;; problems so that any plugins that depend on multiple-cursors (which I have
   ;; no control over) can still use it in relative safety.
-  (when (featurep! :feature evil)
+  (when (featurep! :editor evil)
     (evil-define-key* '(normal emacs) mc/keymap [escape] #'mc/keyboard-quit)
 
     (defvar +mc--compat-evil-prev-state nil)

modules/editor/multiple-cursors/packages.el

@@ -1,7 +1,7 @@
 ;; -*- no-byte-compile: t; -*-
 ;;; editor/multiple-cursors/packages.el
 
-(cond ((featurep! :feature evil)
+(cond ((featurep! :editor evil)
        (package! evil-multiedit)
        (package! evil-mc))