docs: add quickstart guide for kcp with kind and helm#3774

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majiayu000 wants to merge 4 commits intokcp-dev:mainfrom

majiayu000:fix-3723-feature-quick-start-kind-docum-0101-2313

Commits on Jan 1, 2026

docs: add quickstart guide for kcp with kind and helm
majiayu000
committed

Commits on Jan 5, 2026

docs: fix kind quickstart helm instructions
majiayu000
committed

Commits on Jan 20, 2026

docs: fix quickstart guide based on review comments (hostname, quoting, url)
majiayu000
committed

Commits on Jan 22, 2026

docs: add verification script for kind quickstart
majiayu000
committed