Update image retrieval to get multiple images (#1051)

Author: npentrel

src/viam/services/vision/vision.py

@@ -168,7 +168,8 @@ async def get_detections(
             my_detector = VisionClient.from_robot(robot=machine, "my_detector")
 
             # Get an image from the camera
-            img = await my_camera.get_image()
+            images, _ = await my_camera.get_images()
+            img = images[0]
 
             # Get detections for that image
             detections = await my_detector.get_detections(img)
@@ -235,7 +236,8 @@ async def get_classifications(
             my_classifier = VisionClient.from_robot(robot=machine, "my_classifier")
 
             # Get an image from the camera
-            img = await my_camera.get_image()
+            images, _ = await my_camera.get_images()
+            img = images[0]
 
             # Get the 2 classifications with the highest confidence scores for the image
             classifications = await my_classifier.get_classifications(img, 2)