Implement geospatial data viewer in pgAdmin4 for PostGIS

Hi Dave/Team,

My name is Xuri Gong. I am working on implementing geospatial data viewer in pgAdmin4.

I wrote a design document for the viewer[1] according to the related issue[2] and I am wondering if it is a proper design. It would be great if there are any suggestions.

I have read the #pgAdmin Project Contributions# doc[3]. Is there any other instruction or standard that is needed to learn?

[1] https://docs.google.com/document/d/1NE1RLTp9uw9fgduZEerrKKbQZEJCPyrSyQKa0-BDZsI/edit?usp=sharing

[2] https://redmine.postgresql.org/issues/1407

[3] https://www.pgadmin.org/docs/pgadmin4/dev/contributions.html

Regards,

Xuri Gong