* doc: initial contribution md
* DOCS: add wren-ui description (#538)
* add wren-ui description
* adjust wording
* Add contributing information for Wren Engine
* add wren-ai-service part
* doc: replenish connector parts
* modify `Creating a New Data Source Connector` section
* refine by gpt
* add some instructions for service development
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Co-authored-by: Andy Yen <38731840+onlyjackfrost@users.noreply.github.com>
Co-authored-by: Grieve <grieve54706@gmail.com>
Co-authored-by: ChihYu Yeh <chihyu.jimmy.yeh@gmail.com>
Co-authored-by: onlyjackfrost <onlyjackfrost@gmail.com>
Co-authored-by: william chang(張仲威) <wwwy3y3@gmail.com>
Howard Chi