Nxstage 617 hy introduction component

src/components.d.ts

src/components/heading/heading.scss

src/components/heading/heading.tsx

src/components/heading/readme.md

src/components/hy-box/readme.md

src/components/hy-introduction/hy-introduction.scss

src/components/hy-introduction/hy-introduction.tsx

src/components/hy-introduction/readme.md

src/components/hy-main-content-wrapper/readme.md

src/components/icon/readme.md

src/components/image/image.spec.tsx

src/components/image/image.tsx

src/components/image/readme.md

src/index.html

src/utils/utils.ts