[DOCS] Add How to use NPU for inference articles to toctrees (#978)

Author: sgolebiewski-intel

manufacturing-ai-suite/industrial-edge-insights-vision/docs/user-guide/pallet-defect-detection/index.rst

@@ -94,6 +94,7 @@ This sample application offers the following features:
    how-to-view-telemetry-data
    how-to-use-gpu-for-inference
    how-to-use-cpu-for-inference
+   how-to-use-npu-for-inference
    how-to-start-mqtt-publisher
    how-to-integrate-balluff-sdk
    how-to-integrate-pylon-sdk

manufacturing-ai-suite/industrial-edge-insights-vision/docs/user-guide/pcb-anomaly-detection/index.rst

@@ -91,6 +91,7 @@ This sample application offers the following features:
    how-to-view-telemetry-data
    how-to-use-gpu-for-inference
    how-to-use-cpu-for-inference
+   how-to-use-npu-for-inference
    how-to-start-mqtt-publisher
    how-to-benchmark
    api-reference

manufacturing-ai-suite/industrial-edge-insights-vision/docs/user-guide/weld-porosity/index.rst

@@ -94,6 +94,7 @@ This sample application offers the following features:
    how-to-start-mqtt-publisher
    how-to-use-gpu-for-inference
    how-to-use-cpu-for-inference
+   how-to-use-npu-for-inference
    how-to-use-opcua-publisher
    how-to-benchmark
    api-reference

manufacturing-ai-suite/industrial-edge-insights-vision/docs/user-guide/worker-safety-gear-detection/index.rst

@@ -97,6 +97,7 @@ This sample application offers the following features:
    how-to-view-telemetry-data
    how-to-use-gpu-for-inference
    how-to-use-cpu-for-inference
+   how-to-use-npu-for-inference
    how-to-start-mqtt-publisher
    how-to-integrate-balluff-sdk
    how-to-integrate-pylon-sdk