Publish refactoring (#298)

* factoring of the publishing function
* integration of json publishing to MQTT
* receiving and transcode json messages from mqtt
* replace the TRACE runtime condition by a buildtime one so as to decrease program size
* remove retainFlag parameter not necessary for the moment
* Increase the scope of tests for arduino mega and esp32
* Update arduinojson library to 5.13.3
* add macros to choose between simple or json publishing or both
* differentiate build test for ATmega2560
* correct wrong sprintf definition
* change IDE version for continuous integration
* let default warning level in arduino ide
* correct pins for ESP32
* reorganize user_config

config_IR.h

@@ -29,14 +29,13 @@
 #define subjectGTWIRtoMQTT  Base_Topic Gateway_Name "/IRtoMQTT"
 #define subjectIRtoMQTT  Base_Topic Gateway_Name "/IRtoMQTT"
 #define subjectMQTTtoIR  Base_Topic Gateway_Name "/commands/MQTTtoIR"
-#define subjectIRtoMQTTprotocol  Base_Topic Gateway_Name "/IRtoMQTT/protocol"
-#define subjectIRtoMQTTbits  Base_Topic Gateway_Name "/IRtoMQTT/bits"
-#define subjectIRtoMQTTRaw  Base_Topic Gateway_Name "/IRtoMQTT/raw"
+
 // subject monitored to listen traffic processed by other gateways to store data and avoid ntuple
 #define subjectMultiGTWIR "+/+/IRtoMQTT"
 #define IRbitsKey "IRBITS_" // bits  will be defined if a subject contains IRbitsKey followed by a value of 2 digits
 #define IRRptKey "RPT_" // repeats  will be defined if a subject contains IRRptKey followed by a value of 1 digit
 #define repeatIRwMQTT false // do we repeat a received signal by using mqtt
+#define repeatIRwNumber 3 // default repeat of the signal
 #define RawDirectForward false // direct repeat of IR signal with raw data
 #define RawFrequency 38 // raw frequency sending
 //#define DumpMode true // uncomment so as to see big dumps of IR codes