Convert init.el and early-init.el to lexical binding

emacs/early-init.el

@@ -1,4 +1,5 @@
-;; Disable package.el in favor of straight.el
+;; -*- lexical-binding: t; -*-
+;; Disable package.el in favor of elpaca
 (setq package-enable-at-startup nil)
 
 (setq gc-cons-threshold most-positive-fixnum)

emacs/init.el

@@ -1,3 +1,4 @@
+;; -*- lexical-binding: t; -*-
 ;;; Preamble
 ;; Suppress native compilation warnings
 (setq native-comp-async-report-warnings-errors nil)