GitHub不再支持密码验证解决方案：SSH免密与Token登录配置

今天提交代码，push到GitHub上，突然出现这个问题。

remote: Support for password authentication was removed on August 13, 2021. Please use a personal access token instead.

remote: Please see https://github.blog/2020-12-15-token-authentication-requirements-for-git-operations/ for more information.

fatal: unable to access 'https://github.com/zhoulujun/algorithm.git/': The requested URL returned error: 403

官方的解释：https://github.blog/changelog/2021-08-12-git-password-authentication-is-shutting-down/

As previously announced, starting on August 13, 2021, at 09:00 PST, we will no longer accept account passwords when authenticating Git operations on GitHub.com. Instead, token-based authentication (for example, personal access, OAuth, SSH Key, or GitHub App inst