fix: Rationalize custom icons to avoid duplication (#1639)

scripts/docs-update-icons.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# This script copies icons out of the source tree for documentation.
+
+FRIGATE="./src/camera-manager/frigate/assets/frigate.svg"
+MOTIONEYE="./src/camera-manager/motioneye/assets/motioneye.svg"
+DIR_ICONS="./docs/images/icons"
+
+copy() {
+  PATH="$1"
+  echo "Copying image $PATH to $DIR_ICONS"
+  /bin/cp "$PATH" "$DIR_ICONS"
+}
+
+copy "$FRIGATE"
+copy "$MOTIONEYE"