reworked arduino library folder structure

...AW/ArduinoJson/extras/tests/FailingBuilds/assign_char.cpp

...inoJson/extras/tests/FailingBuilds/deserialize_object.cpp

...ArduinoJson/extras/tests/FailingBuilds/read_long_long.cpp

...rduinoJson/extras/tests/FailingBuilds/variant_as_char.cpp

...rduinoJson/extras/tests/FailingBuilds/write_long_long.cpp

...aries/RAW/ArduinoJson/extras/tests/Helpers/Allocators.hpp

.../libraries/RAW/ArduinoJson/extras/tests/Helpers/Arduino.h

...ies/RAW/ArduinoJson/extras/tests/Helpers/CustomReader.hpp

...braries/RAW/ArduinoJson/extras/tests/Helpers/Literals.hpp

...ibraries/RAW/ArduinoJson/extras/tests/Helpers/api/Print.h

...braries/RAW/ArduinoJson/extras/tests/Helpers/api/Stream.h

...braries/RAW/ArduinoJson/extras/tests/Helpers/api/String.h

...aries/RAW/ArduinoJson/extras/tests/Helpers/avr/pgmspace.h

.../ArduinoJson/extras/tests/IntegrationTests/CMakeLists.txt

...AW/ArduinoJson/extras/tests/IntegrationTests/gbathree.cpp

...AW/ArduinoJson/extras/tests/IntegrationTests/issue772.cpp

...uinoJson/extras/tests/IntegrationTests/openweathermap.cpp

.../ArduinoJson/extras/tests/IntegrationTests/round_trip.cpp

...ies/RAW/ArduinoJson/extras/tests/JsonArray/CMakeLists.txt

.../libraries/RAW/ArduinoJson/extras/tests/JsonArray/add.cpp