Expose app runtime info across adapters

src/ipython_webapp/app.py

@@ -10,6 +10,11 @@ app = FastAPI(title="IPython Demo", version="0.1.0")
 ShellApp = App()  # global, scary
 
 
+@app.get("/info")
+def get_info():
+    return ShellApp.info()
+
+
 @app.get("/shells")
 def list_shells():
     shells = ShellApp.list_shells()