feat(server): support headers configurable

[stygian-desolator]

Description

support server headers configurable.

close #3857
close #4736

Additional context

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

Before submitting the PR, please make sure you do the following

• Read the Contributing Guidelines.
• Read the Pull Request Guidelines and follow the Commit Convention.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.

[patak-dev]

@truongsinh @apazzolini we are planning to merge this PR in the next weeks targeting Vite 2.8. If you have some time, it would be helpful if you could check that this feat covers your requested use case (and if possible testing it against your projects). Thanks!

[sanyuan0704]

Thanks!