docs: Add a "Why Vite+" section. (#813) #2764

Job	Run time
detect-changes	6s
download-previous-rolldown-binaries	11s
Build vite-plus packages (ubuntu-latest)	1m 59s
Build vite-plus packages (windows-latest)	4m 10s
frm-stack E2E test (ubuntu-latest)	2m 11s
vitepress E2E test (windows-latest)	4m 34s
dify E2E test (ubuntu-latest)	7m 35s
vitepress E2E test (ubuntu-latest)	2m 18s
vibe-dashboard E2E test (windows-latest)	3m 36s
vibe-dashboard E2E test (ubuntu-latest)	59s
rollipop E2E test (ubuntu-latest)	1m 40s
vite-vue-vercel E2E test (ubuntu-latest)	56s
tanstack-start-helloworld E2E test (ubuntu-latest)	59s
oxlint-plugin-complexity E2E test (ubuntu-latest)	58s
vue-mini E2E test (windows-latest)	3m 0s
vite-vue-vercel E2E test (windows-latest)	3m 27s
vue-mini E2E test (ubuntu-latest)	1m 5s
oxlint-plugin-complexity E2E test (windows-latest)	2m 18s
rollipop E2E test (windows-latest)	3m 21s
tanstack-start-helloworld E2E test (windows-latest)	3m 2s
Notify on failure	0s
	48m 25s

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