Add raw avonet.db (GPS species filter, no zip)

Add avonet.db (Avonet species distribution grid) for GPS/eBird regional filter

Add README with credits to upstream model authors

Add KeypointDetector CoreML weight.bin

Add FlightDetector CoreML weight.bin

Add AestheticsModel CoreML weight.bin

Add OSEAClassifier CoreML weight.bin

Add YOLOBirdDetector CoreML weight.bin

initial commit