Fix#5463 - [QT5CPP] missing SWGUUID when generating client based on swager.yaml containing a string with format 'uuid' (#5472)

* Add support to UUID type

* Simplify and use a simple QString instead of a QUuid.
Work for using a QUuid is way larger than supporting QString (imply modifying multiple c++ templates).
Current needs are fullfill with the use of a simple QString, so I let the use of QUuid for future enhancement.

* - add windows executable for generating qt5 security samples
- update sample clients
PS : some modifications on the samples are not related to the patch I applied. Were the samples up-to-date ?

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/Qt5CPPGenerator.java

@@ -126,6 +126,11 @@ public class Qt5CPPGenerator extends DefaultCodegen implements CodegenConfig {
         // mapped to String as a workaround
         typeMapping.put("binary", "QString");
         typeMapping.put("ByteArray", "QByteArray");
+        // UUID support - possible enhancement : use QUuid instead of QString.
+        //   beware though that Serialisation/deserialisation of QUuid does not
+        //   come out of the box and will need to be sorted out (at least imply
+        //   modifications on multiple templates)
+        typeMapping.put("UUID", "QString");
 
         importMapping = new HashMap<String, String>();