Amend CMakeLists.txt to include SSLClient lib

Author: sgalabov

CMakeLists.txt

@@ -100,6 +100,8 @@ set(LIBRARY_SRCS
   libraries/SimpleBLE/src/SimpleBLE.cpp
   libraries/SPIFFS/src/SPIFFS.cpp
   libraries/SPI/src/SPI.cpp
+  libraries/SSLClient/src/ssl_client.cpp
+  libraries/SSLClient/src/SSLClient.cpp
   libraries/Ticker/src/Ticker.cpp
   libraries/Update/src/Updater.cpp
   libraries/Update/src/HttpsOTAUpdate.cpp
@@ -186,6 +188,7 @@ set(includedirs
   libraries/SimpleBLE/src
   libraries/SPIFFS/src
   libraries/SPI/src
+  libraries/SSLClient/src
   libraries/Ticker/src
   libraries/Update/src
   libraries/USB/src