fix(examples): Add all components to build

The trimmed-down build excluded PSRAM and other components,
that users might want to use

examples/person_detection/CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.5)
-set(COMPONENTS main)
+
 set(EXTRA_COMPONENT_DIRS static_images)
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)