feat(file-templates): add .doomrc template

Ref: 9b8ed397e8

modules/editor/file-templates/config.el

@@ -19,6 +19,9 @@ don't have a :trigger property in `+file-templates-alist'.")
     ("/Makefile$"             :mode makefile-gmake-mode)
     ;; elisp
     ("/.dir-locals.el$")
+    ("/\\.doomrc$"
+     :trigger "__doomrc"
+     :mode emacs-lisp-mode)
     ("/packages\\.el$" :when +file-templates-in-emacs-dirs-p
      :trigger "__doom-packages"
      :mode emacs-lisp-mode)

modules/editor/file-templates/templates/emacs-lisp-mode/__doomrc

@@ -0,0 +1,8 @@
+;;; .doomrc --- doom runtime config -*- mode: emacs-lisp; lexical-binding: t; -*-
+;;; Commentary:
+;;; Code:
+(require 'doom) ; be silent, byte-compiler
+
+$0`%`
+
+;;; .doomrc ends here