MLECO-2082: Adding visual wake word use case
MLECO-2083: Refactoring img_class and visual wake word

*Added source files for visual wake word
*Added tests
*Added docs
*Added new images for visual wake word demo
*Refactored common functions in img_class, visual wake word and other usecases

Change-Id: Ibd25854e19a5517f940a8d3086a5d4835fab89e9
Signed-off-by: Éanna Ó Catháin <eanna.ocathain@arm.com>
diff --git a/resources/vww/labels/visual_wake_word_labels.txt b/resources/vww/labels/visual_wake_word_labels.txt
new file mode 100644
index 0000000..ec80465
--- /dev/null
+++ b/resources/vww/labels/visual_wake_word_labels.txt
@@ -0,0 +1,2 @@
+not person
+person
\ No newline at end of file