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

lib/ArduinoJson/extras/tests/JsonDocument/CMakeLists.txt

@@ -0,0 +1,22 @@
+# ArduinoJson - arduinojson.org
+# Copyright Benoit Blanchon 2014-2020
+# MIT License
+
+add_executable(JsonDocumentTests
+	add.cpp
+	BasicJsonDocument.cpp
+	compare.cpp
+	containsKey.cpp
+	createNested.cpp
+	DynamicJsonDocument.cpp
+	isNull.cpp
+	nesting.cpp
+	remove.cpp
+	shrinkToFit.cpp
+	size.cpp
+	StaticJsonDocument.cpp
+	subscript.cpp
+)
+
+target_link_libraries(JsonDocumentTests catch)
+add_test(JsonDocument JsonDocumentTests)