basic features: add feature matrix (#7365)
basic features: add feature matrix (#7365)

* basic features: add feature matrix

* Update basic-features.md

* Update basic-features.md

Co-authored-by: Grace Cai <af16a57a775fdd06f724746aa973c12179aed193@126.com>

* split table and unify wording

* Update basic-features.md

* address comment from zimulala

* address comment

* Update basic-features.md

* Update basic-features.md

Co-authored-by: Lynn <803bdbbaf4ba27bb2a860e12907143bdf8154009@126.com>

* Update basic-features.md

Co-authored-by: Lynn <803bdbbaf4ba27bb2a860e12907143bdf8154009@126.com>

* Update basic-features.md

Co-authored-by: Grace Cai <af16a57a775fdd06f724746aa973c12179aed193@126.com>
Co-authored-by: Lynn <803bdbbaf4ba27bb2a860e12907143bdf8154009@126.com>
pingcap/docs-cn,pingcap/docs-cn