add camera simple test

cam_driver/test_cam.py

+#!/usr/bin/env python3
+
+###############################################
+##              Simple Request               ##
+###############################################
+
+import pyrealsense2 as rs
+
+# Configure depth and color streams
+pipeline = rs.pipeline()
+config = rs.config()
+
+# Get device product line for setting a supporting resolution
+pipeline_wrapper = rs.pipeline_wrapper(pipeline)
+pipeline_profile = config.resolve(pipeline_wrapper)
+device = pipeline_profile.get_device()
+device_product_line = str(device.get_info(rs.camera_info.product_line))
+
+print( f"Connect: {device_product_line}" )
+for s in device.sensors:
+    print( "Name:" + s.get_info(rs.camera_info.name) )
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