feat: add sponsor

Author: EvanLi

source/process.py

@@ -196,6 +196,12 @@ def write_head_contents():
 
             *Last Automatic Update Time: {write_time}*
 
+            ## Sponsor me
+
+            [Buy Me a Coffee | Alipay & WeChat Pay](https://afdian.com/a/EvanLi/plan)
+
+            [afdian 爱发电 EvanLi | 支付宝/微信支付](https://afdian.com/a/EvanLi/plan)
+
             ## Table of Contents
 
             * [Most Stars](#most-stars)