[修改] 增加freeRTOS

1. 版本FreeRTOSv202212.01，命名为kernel；

kernel/FreeRTOS-Plus/Source/coreJSON/jsonFilePaths.cmake

@@ -0,0 +1,14 @@
+# This file is to add source files and include directories
+# into variables so that it can be reused from different repositories
+# in their Cmake based build system by including this file.
+#
+# Files specific to the repository such as test runner, platform tests
+# are not added to the variables.
+
+# JSON library source files.
+set( JSON_SOURCES
+     ${CMAKE_CURRENT_LIST_DIR}/source/core_json.c )
+
+# JSON library Public Include directories.
+set( JSON_INCLUDE_PUBLIC_DIRS
+     ${CMAKE_CURRENT_LIST_DIR}/source/include )