Implement splash screen

https://xenodium.com/emacs-a-welcoming-experiment/

.emacs.d/early-init.el

@@ -0,0 +1,36 @@
+(setq package-enable-at-startup nil)
+
+(defun ar/show-welcome-buffer ()
+  "Show *Welcome* buffer."
+  (with-current-buffer (get-buffer-create "*Welcome*")
+    (setq truncate-lines t)
+    (let* ((buffer-read-only)
+           (image-path "~/.emacs.d/emacs.png")
+           (image (create-image image-path))
+           (size (image-size image))
+           (height (cdr size))
+           (width (car size))
+           (top-margin (floor (/ (- (window-height) height) 2)))
+           (left-margin (floor (/ (- (window-width) width) 2)))
+           (title "Welcome to Emacs!"))
+      (erase-buffer)
+      (setq mode-line-format nil)
+      (goto-char (point-min))
+      (insert (make-string top-margin ?\n ))
+      (insert (make-string left-margin ?\ ))
+      (insert-image image)
+      (insert "\n\n\n")
+      (insert (make-string (floor (/ (- (window-width) (string-width title)) 2)) ?\ ))
+      (insert title))
+    (setq cursor-type nil)
+    (read-only-mode +1)
+    (switch-to-buffer (current-buffer))
+    (local-set-key (kbd "q") 'kill-this-buffer)))
+
+(setq initial-scratch-message nil)
+(setq inhibit-startup-screen t)
+
+(when (< (length command-line-args) 2)
+  (add-hook 'emacs-startup-hook (lambda ()
+                                  (when (display-graphic-p)
+                                    (ar/show-welcome-buffer)))))