ci: fix flamegraph preview publishing

[uiolee]

What does it do?

since github action security policy strengthen, secrets could not be accessed in workflow 'on.pull_request'.

• refact workflow publishing flamegraph to surge
  • publish PR's flamegraph to surge via trigger 'on.workflow_run'.
  • redesign projects' file structure and domain to reduce the usage of surge's projects.
    Previously one sha occupy 3 projects. Now one sha occupy 1 project (in main branch) or one PR occupy 1 project (in PR)
  • use environment to strengthen secrets' security.

Screenshots

Pull request tasks

• Add test cases for the changes.
• Passed the CI test.
• rebase ci(comment): change filename due to upload-artifact ignores hidden files #5772

[github-actions]

How to test

git clone -b fix/flamegraph_publish https://github.com/hexojs/hexo.git
cd hexo
npm install
npm test