Created SpanService::setPrimary() and setHidden()

These optional methods can be "chained" when instantiating a new SpanService to configure the Service as Primary or Hidden (or both).  This alleviates the need to ServiceType to be propogated through the Service constructor.

Next Up:  Eliminate ServiceType construct and update Examples to use setPrimary instead.

src/HomeSpan.cpp

@@ -933,6 +933,20 @@ SpanService::SpanService(const char *type, ServiceType mod){
 
 ///////////////////////////////
 
+SpanService *SpanService::setPrimary(){
+  primary=true;
+  return(this);
+}
+
+///////////////////////////////
+
+SpanService *SpanService::setHidden(){
+  hidden=true;
+  return(this);
+}
+
+///////////////////////////////
+
 int SpanService::sprintfAttributes(char *cBuf){
   int nBytes=0;
 

src/HomeSpan.h

@@ -115,6 +115,9 @@ struct SpanService{
   
   SpanService(const char *type, ServiceType mod=ServiceType::Regular);
 
+  SpanService *setPrimary();                              // sets the Service Type to be primary and returns pointer to self
+  SpanService *setHidden();                               // sets the Service Type to be hidden and returns pointer to self
+
   int sprintfAttributes(char *cBuf);                      // prints Service JSON records into buf; return number of characters printed, excluding null terminator
   virtual StatusCode update() {return(StatusCode::OK);}   // update Service and return final statusCode based on updated Characteristics - should be overridden by DEVICE-SPECIFIC Services
   virtual void event(){}                                  // event generation for Services that create their own events and need to notify HomeKit of a new Characteristic value(s)