In DataGrip it is currently already possible to see the names of the security policies on a table in PostgreSQL which is awesome! (https://intellij-support.jetbrains.com/hc/en-us/community/posts/360000202444-Can-DataGrip-show-PostgreSQL-Security-Policies-)
I would think that if I double click it, I would be able to view it (or view the generated SQL), but currently it does nothing. I'm not sure if I'm doing something wrong, or if it is just a new feature request :).
It would also be cool to have the possibility to edit (by dropping and readding it with the same name), and the possibility to easily create a new one with a GUI.