feat: update ignore files

Author: vinurs

.gitignore

@@ -53,3 +53,5 @@ flycheck_*.el
 /tramp
 /transient/
 /var/
+
+librime/

sync-upstream.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+# 设置上游库
+git remote add upstream https://github.com/doomemacs/doomemacs.git
+
+# 禁止向上游push
+git remote set-url --push upstream DISABLE
+
+git fetch upstream
+git merge upstream/master