Rewrite core-cli

Highlights:
- 'doom purge' now purges builds, elpa packages, and repos by default.
  Regrafting repos is now opt-in with the -g/--regraft switches.
  Negation flags have been added for elpa/repos: -e/--no-elpa and
  -r/--no-repos.
- Removed 'doom rebuild' (it is now just 'doom build' or 'doom b').
- Removed 'doom build's -f flag, this is now the default. Added the -r
  flag instead, which only builds packages that need rebuilding.
- 'doom update' now updates packages synchronously, but produces more
  informative output about the updating process.
- Straight can now prompt in batch mode, which resolves a lot of issues
  with 'doom update' (and 'doom upgrade') freezing indefinitely or
  throwing repo branch errors.
- 'bin/doom's switches are now positional. Switches aimed at `bin/doom`
  must precede any subcommands. e.g.
    Do: 'doom -yd upgrade'
    Don't do: 'doom upgrade -yd'
- Moved 'doom doctor' from bin/doom-doctor to core/cli/doctor, and
  integrated core/doctor.el into it, as to avoid naming conflicts
  between it and Emacs doctor.
- The defcli! macro now has a special syntax for declaring flags, their
  arguments and descriptions.

Addresses #1981, #1925, #1816, #1721, #1322

core/cli/debug.el

@@ -1,21 +1,11 @@
 ;;; core/cli/debug.el -*- lexical-binding: t; -*-
 
-(load! "autoload/debug" doom-core-dir)
-
-
 ;;
 ;;; Commands
 
-(defcli! info (&optional format)
-  "Output system info in markdown for bug reports.
-
-Will print in the following formats:
-
-  --json
-  --md / --markdown
-  --lisp
-
-If no arguments are given, --raw is assumed."
+(defcli! info
+  ((format ["--json" "--md" "--lisp"] "What format to dump info into"))
+  "Output system info in markdown for bug reports."
   (pcase format
     ("--json"
      (require 'json)
@@ -23,7 +13,7 @@ If no arguments are given, --raw is assumed."
        (insert (json-encode (doom-info)))
        (json-pretty-print-buffer)
        (print! (buffer-string))))
-    ((or "--md" "--markdown")
+    ("--md"
      (doom/info))
     ((or `nil "--lisp")
      (doom/info 'raw))
@@ -33,6 +23,7 @@ If no arguments are given, --raw is assumed."
   nil)
 
 (defcli! (version v) ()
-  "Reports the version of Doom and Emacs."
+  "Show version information for Doom & Emacs."
+  :bare t
   (doom/version)
   nil)