Add to docs video examples of GeoAI SAM3 plugin and export to coco to load into a deepforest model.

[bw4sz]

There has been great development with SAM3 that can serve as pre-training here.

https://opengeoai.org/qgis_plugin/

[giswqs]

DeepForest has been integrated into the GeoAI QGIS Plugin. Use the plugin update checker to update it to v0.5.0

https://opengeoai.org/qgis_plugin/#deepforest-panel-object-detection_1

deepforest-demo.mp4