feat(runtime-vapor): mounted & unmounted hook

[GaoNeng-wWw]

^^ source code

vvv result

I reopen a new pull request. Because I messed up when resolving the conflict

[ubugeeei]

@GaoNeng-wWw
Thank you for submitting the new one! And I'm sorry for the conflict.
Since this R&D is still in the phase where a small amount of source code is being modified by multiple people,
conflicts occur frequently. 😅

@sxzz
Please check this comment from the previous PR!
#43 (comment)

[GaoNeng-wWw]

Thank you for submitting the new one! And I'm sorry for the conflict.
Since this R&D is still in the phase where a small amount of source code is being modified by multiple people,
conflicts occur frequently. 😅

It's my lack of familiarity with Git that caused this, there's no need for you to apologize for it. 👀

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	88.2 kB	33.6 kB	30.3 kB
runtime-vapor.global.prod.js	20.1 kB (+888 B)	7.67 kB (+382 B)	7.04 kB (+336 B)
vue-vapor.global.prod.js	55.6 kB (+887 B)	18.8 kB (+379 B)	17 kB (+341 B)
vue.global.prod.js	145 kB	52.7 kB	47.1 kB

Usages

Name	Size	Gzip	Brotli
createApp	48.8 kB	19.1 kB	17.5 kB
createSSRApp	52 kB	20.5 kB	18.7 kB
defineCustomElement	51.2 kB	19.9 kB	18.2 kB
vapor	20 kB (+873 B)	7.68 kB (+387 B)	7.06 kB (+346 B)
overall	62.2 kB	24 kB	21.9 kB