doc: add usecase
@@ -154,6 +154,7 @@ Checkout those talks on conferences:
Although RustPython is a fairly young project, a few people have used it to
make cool projects:
+- [GreptimeDB](https://github.com/GreptimeTeam/greptimedb): an open-source, cloud-native, distributed time-series database. Using RustPython for embedded scripting.
- [pyckitup](https://github.com/pickitup247/pyckitup): a game engine written in
rust.
- [Robot Rumble](https://github.com/robot-rumble/logic/): an arena-based AI competition platform
