feat(emacs): Lean 4 support

modules/home/users/crumb/emacs/modules/lang/syd-lang-lean4.el

@@ -0,0 +1,9 @@
+;;; syd-lang-lean4.el -*- lexical-binding: t; -*-
+
+(use-package lean4-mode
+  :straight (:type git
+             :host github
+             :repo "leanprover-community/lean4-mode"
+             :files ("*.el" "data")))
+
+(provide 'syd-lang-lean4)

modules/home/users/crumb/emacs/modules/syd-lang.el

@@ -2,13 +2,14 @@
              (file-name-concat user-emacs-directory "modules" "lang"))
 
 (require 'syd-lang-agda)
-(require 'syd-lang-kdl)
-(require 'syd-lang-emacs-lisp)
 (require 'syd-lang-clojure)
-(require 'syd-lang-nix)
+(require 'syd-lang-emacs-lisp)
 (require 'syd-lang-haskell)
-(require 'syd-lang-sql)
 (require 'syd-lang-idris2)
+(require 'syd-lang-kdl)
+(require 'syd-lang-lean4)
+(require 'syd-lang-nix)
+(require 'syd-lang-sql)
 
 (use-package tf2-conf-mode)