feat: add support for Popover API

[chirokas]

Alternate to #10977

Note
true and false are invalid values for popover.

Reference
https://html.spec.whatwg.org/multipage/popover.html#the-popover-attribute
https://github.com/chromium/chromium/blob/196f490f4fa71a9c012a49382da88531b9c1f4cd/third_party/blink/renderer/core/html/html_element.cc#L1214
https://github.com/WebKit/WebKit/blob/bd98799b60c4650552667337e1fcf0728bccc783/Source/WebCore/html/HTMLElement.cpp#L1318

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	100 kB	38.1 kB	34.3 kB
vue.global.prod.js	158 kB	58.2 kB	51.9 kB

Usages

Name	Size	Gzip	Brotli
createApp (CAPI only)	46.4 kB	18.1 kB	16.6 kB
createApp	54.4 kB	21.2 kB	19.4 kB
createSSRApp	58.6 kB	22.9 kB	20.9 kB
defineCustomElement	59.2 kB	22.7 kB	20.7 kB
overall	68.4 kB	26.3 kB	24 kB

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commit: e38cff1

[edison1105]

Thank you for your contribution. Maybe we should review #10977 first. If the author is no longer active, we can consider creating a new PR.