refactor: replace url.resolve() with String.replace()

[curbengh]

What does it do?

url.resolve() is a legacy API, so it's best to avoid it if possible, String.replace() is also 6x faster.

How to test

git clone -b resolve-path-string-replace https://github.com/curbengh/hexo.git
cd hexo
npm install
npm test

Screenshots

Pull request tasks

• [ ] Add test cases for the changes.
• [ ] Passed the CI test.

[coveralls]

Coverage decreased (-0.0009%) to 98.294% when pulling 27384cc49139156c51056a9f7a611c02882c54b2 on curbengh:resolve-path-string-replace into 463025c9d21411570e56b15812eb319ea0883330 on hexojs:master.

[SukkaW]

Should we bring up a resolveURL in hexo-util?

[github-actions[bot]]

How to test

git clone -b resolve-path-string-replace https://github.com/curbengh/hexo.git
cd hexo
npm install
npm test