docs(notebook): add OGC API – Moving Features tutorial against AIS data

tutorial.ipynb walks through the eight core MobilityAPI endpoints
(DELETE/POST collection, POST/GET items, bbox spatial filter, tgsequence,
velocity, subTrajectory) end-to-end against the Danish Maritime
Authority AIS dataset, with folium visualisations for the all-vessels,
bbox-port, and temporal-slice overlays.

Mirrors the slide-deck narrative without re-coding the substrate —
endpoint shapes, payload structure, and the trajectories_mf1.json data
source match the existing demo.ipynb so the same backend session
serves both notebooks.

README gains a one-line pointer to tutorial.ipynb under Usage.

Author: estebanzimanyi

README.md

@@ -74,6 +74,8 @@ If you need the AIS dataset, download `aisdk_2024-08-07.zip` from the [Danish Ma
 
 Send HTTP requests to the API using any HTTP client. As an example, the `ais.sql` script will create `ships` and `ship2` tables containing ships data — change the CSV path in the script to point at your downloaded dataset.
 
+For a guided walk-through of the OGC API – Moving Features endpoints against the Danish AIS dataset, open the [`tutorial.ipynb`](tutorial.ipynb) notebook (start the server with `./run.sh` first).
+
 ## Where MobilityAPI fits
 
 MobilityAPI is the HTTP / OGC layer of the MEOS ecosystem. The other layers are: