feat: update footer and support hidden posts

_config.butterfly.yml

@@ -208,7 +208,7 @@ footer:
  owner:
   enable: true
   since: 2024
- custom_text:  <a href="https://beian.miit.gov.cn/#/Integrated/recordQuery"><img class="icp-icon" src="https://beian.mps.gov.cn/img/logo01.dd7ff50e.png"><span>备案号：豫ICP备2023019300号</span></a>
+ custom_text:  <a href="https://beian.miit.gov.cn/#/Integrated/recordQuery" target="_blank" rel="noopener noreferrer">备案号：豫ICP备2023019300号</a><span class="footer-separator">|</span><a href="https://beian.mps.gov.cn/#/query/webSearch?code=41102502000221" target="_blank" rel="noopener noreferrer"><img class="icp-icon" src="https://beian.mps.gov.cn/img/logo01.dd7ff50e.png"><span>豫公网安备41102502000221号</span></a>
 
 # aside (側邊欄)
 # --------------------------------------
@@ -990,4 +990,4 @@ CDN:
  # utils:
  # valine:
  # waline_css:
- # waline_js:
+ # waline_js: