espressif: group boards using target name as a family

`hw\bsp` separate one family folder to esp32s2, esp32s3
add board specific board.cmake file to override board specific options(features)
fix examples and test scripts to use new family approach

hw/bsp/esp32s2/boards/CMakeLists.txt

@@ -0,0 +1,14 @@
+idf_component_register(SRCS esp32s2.c
+                    INCLUDE_DIRS "." "${BOARD}"
+                    PRIV_REQUIRES "driver"
+                    REQUIRES freertos src led_strip)
+
+# Apply board specific content
+include("${BOARD}/board.cmake")
+
+idf_component_get_property( FREERTOS_ORIG_INCLUDE_PATH freertos ORIG_INCLUDE_PATH)
+target_include_directories(${COMPONENT_TARGET} PUBLIC
+  "${FREERTOS_ORIG_INCLUDE_PATH}"
+  "${TOP}/hw"
+  "${TOP}/src"  
+)