use local library source instead to correct some black-box issue for aliyuniot

lib/ArduinoJson/CMakeLists.txt

@@ -0,0 +1,21 @@
+# ArduinoJson - arduinojson.org
+# Copyright Benoit Blanchon 2014-2020
+# MIT License
+
+cmake_minimum_required(VERSION 3.0)
+project(ArduinoJson)
+
+enable_testing()
+
+add_definitions(-DARDUINOJSON_DEBUG)
+if(CMAKE_CXX_COMPILER_ID MATCHES "(GNU|Clang)")
+	add_compile_options(-g -O0)
+endif()
+
+if(${COVERAGE})
+	set(CMAKE_CXX_FLAGS "-fprofile-arcs -ftest-coverage")
+endif()
+
+include_directories(${CMAKE_CURRENT_LIST_DIR}/src)
+add_subdirectory(extras/tests)
+add_subdirectory(extras/fuzzing)