💥 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/config.el

@@ -0,0 +1,44 @@
+;;; tools/debugger/config.el -*- lexical-binding: t; -*-
+
+(def-package! realgud
+  :commands (realgud:gdb realgud:trepanjs realgud:bashdb realgud:zshdb)
+  :config
+  (set-popup-rule! "^\\*\\(?:trepanjs:\\(?:g\\|zsh\\|bash\\)db\\)" :size 20)
+
+  ;; TODO Temporary Ex commands for the debugger
+  ;; (def-tmp-excmd! doom:def-debug-on doom:def-debug-off
+  ;;   ("n[ext]" . realgud:cmd-next)
+  ;;   ("s[tep]" . realgud:cmd-step)
+  ;;   ("b[reak]" . +debug:toggle-breakpoint)
+  ;;   ("c[ontinue]" . realgud:cmd-continue))
+  ;; (advice-add #'realgud-cmdbuf-init :after #'doom:def-debug-on)
+  ;; (advice-add #'realgud:cmd-quit :after #'doom:def-debug-off)
+
+  ;; Monkey-patch `realgud:run-process' to run in a popup.
+  ;; TODO Find a more elegant solution
+  ;; FIXME Causes realgud:cmd-* to focus popup on every invocation
+  (defun +debugger*realgud-run-process
+      (debugger-name script-filename cmd-args minibuffer-history-var &optional no-reset)
+    (let* ((cmd-buf (apply #'realgud-exec-shell debugger-name script-filename
+                           (car cmd-args) no-reset (cdr cmd-args)))
+           (process (get-buffer-process cmd-buf)))
+      (cond ((and process (eq 'run (process-status process)))
+             (pop-to-buffer cmd-buf)
+             (define-key evil-emacs-state-local-map (kbd "ESC ESC") #'+debug/quit)
+             (realgud:track-set-debugger debugger-name)
+             (realgud-cmdbuf-info-in-debugger?= 't)
+             (realgud-cmdbuf-info-cmd-args= cmd-args)
+             (when cmd-buf
+               (switch-to-buffer cmd-buf)
+               (when realgud-cmdbuf-info
+                 (let* ((info realgud-cmdbuf-info)
+                        (cmd-args (realgud-cmdbuf-info-cmd-args info))
+                        (cmd-str  (mapconcat #'identity cmd-args " ")))
+                   (set minibuffer-history-var
+                        (list-utils-uniq (cons cmd-str (eval minibuffer-history-var))))))))
+            (t
+             (if cmd-buf (switch-to-buffer cmd-buf))
+             (message "Error running command: %s" (mapconcat #'identity cmd-args " "))))
+      cmd-buf))
+  (advice-add #'realgud:run-process :override #'+debugger*realgud-run-process))
+