💥 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/tools/debugger/autoload/evil.el

@@ -0,0 +1,34 @@
+;; tools/debugger/autoload/evil.el -*- lexical-binding: t; -*-
+;;;###if (featurep! :editor evil)
+
+;;;###autoload (autoload '+debugger:start "tools/debugger/autoload/evil" nil t)
+(evil-define-command +debugger:start (&optional path)
+  "Initiate debugger for current major mode"
+  (interactive "<f>")
+  ;; TODO Add python debugging
+  (let ((default-directory (doom-project-root)))
+    (pcase major-mode
+      ((or 'c-mode 'c++-mode)
+       (realgud:gdb (if path (concat "gdb " path))))
+      ((or 'ruby-mode 'enh-ruby-mode)
+       ;; FIXME
+       (doom:repl nil (format "run '%s'" (file-name-nondirectory (or path buffer-file-name)))))
+      ('sh-mode
+       (let ((shell sh-shell))
+         (when (string= shell "sh")
+           (setq shell "bash"))
+         (pcase shell
+           ("bash"
+            (realgud:bashdb (if path (concat "bashdb " path))))
+           ("zsh"
+            (realgud:zshdb (if path (concat "zshdb " path))))
+           (_ (user-error "No shell debugger for %s" shell)))))
+      ((or 'js-mode 'js2-mode 'js3-mode)
+       (realgud:trepanjs))
+      ('haskell-mode (haskell-debug))
+      (_ (user-error "No debugger for %s" major-mode)))))
+
+;;;###autoload (autoload '+debugger:toggle-breakpoint "tools/debugger/autoload/evil" nil t)
+(evil-define-command +debugger:toggle-breakpoint (&optional bang)
+  (interactive "<!>")
+  (call-interactively (if bang #'realgud:cmd-clear #'realgud:cmd-break)))