Add gqt tool

Author: eerimoq

src/content/code/tools/gqt.md

@@ -0,0 +1,14 @@
+---
+name: gqt
+description: Build and execute GraphQL queries in the terminal.
+url: https://github.com/eerimoq/gqt
+github: eerimoq/gqt
+---
+
+Run ``gqt`` against your GraphQL endpoint. Build your query in an
+intuitive TUI and execute it. The response from the server is written
+to standard output.
+
+```bash
+gqt -e https://your.app.com/graphql
+```