perf(compiler-vapor): template abbreviation of end tag

[CathLee]

related:#166
I've made some optimizations to ensure 'abbreviation' equals 'expected' through the IR, and added the 'isShouldSelfClosing' tag to the Node type. I'm not entirely sure it's correct, but it seems to work🧐

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[sxzz]

Tweaked unit test, and it failed

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
compiler-dom.global.prod.js	81.5 kB (+1.39 kB)	28.4 kB (+219 B)	25 kB (+231 B)
compiler-vapor.global.prod.js	53.7 kB (+1.49 kB)	18.1 kB (+228 B)	16.4 kB (+136 B)
runtime-dom.global.prod.js	94.7 kB	35.6 kB	32.2 kB
runtime-vapor.global.prod.js	43.1 kB	16 kB	14.7 kB
vue-vapor.global.prod.js	94.3 kB (+1.49 kB)	32.7 kB (+241 B)	29.5 kB (+193 B)
vue.global.prod.js	153 kB (+1.39 kB)	55.2 kB (+240 B)	49.3 kB (+169 B)

Usages

Name	Size	Gzip	Brotli
createApp	54.9 kB	21.1 kB	19.2 kB
createSSRApp	58.2 kB	22.4 kB	20.4 kB
defineCustomElement	57.2 kB	21.8 kB	19.9 kB
vapor	43.4 kB	16.1 kB	14.7 kB
overall	68.6 kB	26.1 kB	23.6 kB

[sxzz]

Are you still working on this PR?

[CathLee]

Are you still working on this PR?
yes, already done a little work , but not sure about whether is right or not, I will give another pr right now