Autoload format library

If you byte-compile your config, the expanded forms of this library's
macros (like print! or format!) will use internal functions that aren't
autoloaded (like `doom--format`, mentioned in #1768), causing
void-function errors.

core/autoload/format.el

@@ -91,6 +91,7 @@ Accepts 'ansi and 'text-properties. nil means don't render colors.")
 ;;
 ;;; Library
 
+;;;###autoload
 (defun doom--format (output)
   (if (string-empty-p (string-trim output))
       ""
@@ -99,6 +100,7 @@ Accepts 'ansi and 'text-properties. nil means don't render colors.")
              "\n" (concat "\n" (make-string doom-format-indent 32))
              output t t))))
 
+;;;###autoload
 (defun doom--format-print (output)
   (unless (string-empty-p output)
     (if (not noninteractive)
@@ -107,6 +109,7 @@ Accepts 'ansi and 'text-properties. nil means don't render colors.")
       (terpri)) ; newline
     t))
 
+;;;###autoload
 (defun doom--format-indent (width text &optional prefix)
   "Indent TEXT by WIDTH spaces. If ARGS, format TEXT with them."
   (with-temp-buffer
@@ -121,6 +124,7 @@ Accepts 'ansi and 'text-properties. nil means don't render colors.")
         (insert prefix)))
     (buffer-string)))
 
+;;;###autoload
 (defun doom--format-autofill (&rest msgs)
   "Ensure MSG is split into lines no longer than `fill-column'."
   (with-temp-buffer
@@ -131,6 +135,7 @@ Accepts 'ansi and 'text-properties. nil means don't render colors.")
       (fill-region (point-min) (point-max))
       (buffer-string))))
 
+;;;###autoload
 (defun doom--format-color (style format &rest args)
   "Apply STYLE to formatted MESSAGE with ARGS.
 
@@ -159,6 +164,7 @@ Otherwise, it maps colors to a term-color-* face."
                       ((cddr (assq style doom-format-ansi-alist)))))))
       (_ message))))
 
+;;;###autoload
 (defun doom--format-class (class format &rest args)
   "Apply CLASS to formatted format with ARGS.
 
@@ -172,6 +178,7 @@ transformative logic."
           (args (apply #'format format args))
           (format))))
 
+;;;###autoload
 (defun doom--format-apply (forms &optional sub)
   "Replace color-name functions with calls to `doom--format-color'."
   (cond ((null forms) nil)