Add .gitignore rules for Vite timestamp files

- Add patterns to ignore vite.config.*.timestamp-*.mjs files
- Add general *.timestamp-* pattern to prevent similar temporary files
- This prevents accidental commits of build-generated temporary files

Co-authored-by: 孙悟元 <Sunwuyuan@users.noreply.github.com>

.gitignore

@@ -167,3 +167,7 @@ dist
 .svelte-kit
 
 # End of https://www.toptal.com/developers/gitignore/api/node
+
+# Vite 临时文件
+vite.config.*.timestamp-*.mjs
+*.timestamp-*