feat: this.emitFile support prebuilt-chunk type

[TrickyPi]

This PR contains:

• bugfix
• feature
• refactor
• documentation
• other

Are tests included?

• yes (bugfixes and features will not be merged without tests)
• no

Breaking Changes?

• yes (breaking changes will not be merged unless absolutely necessary)
• no

List any relevant issue numbers:
resolves #4210

Description

This PR implements a basic feature about emitting prebuilt chunks, outlined in #4210 (comment)

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
rollup	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 22, 2023 4:52am

[codecov]

Codecov Report

Merging #4990 (abaafeb) into master (0ee31f1) will increase coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head abaafeb differs from pull request most recent head 28be756. Consider uploading reports for the commit 28be756 to get more accurate results

@@           Coverage Diff           @@
##           master    #4990   +/-   ##
=======================================
  Coverage   98.97%   98.97%           
=======================================
  Files         222      222           
  Lines        8157     8175   +18     
  Branches     2243     2250    +7     
=======================================
+ Hits         8073     8091   +18     
  Misses         30       30           
  Partials       54       54           

Impacted Files	Coverage Δ
src/utils/FileEmitter.ts	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

[lukastaegert]

Looks good! However, we need some more tests, and then we need to update the documentation.

[TrickyPi]

Thanks for your review! I'll update the documentation tomorrow.

[TrickyPi]

docs has been updated.

[lukastaegert]

Nice! I slightly changed the wording of the docs, but overall I will release this now.

[rollup-bot]

This PR has been released as part of rollup@3.23.0. You can test it via npm install rollup.