[application] Update README (#6196)

* remove unused ray

* remove unused readme

* update readme

* update readme

* update

* update

* add link

* update readme

* update readme

* fix link

* update code

* update cititaion

* update

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* update readme

* update project

* add images

* update link

* update note

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: TongLi3701