More TDF refactoring

Moved address space, module, property group, variant, pinout and peripheral module extraction to TDF initialisation.
Also some other bits of tidying.

src/Targets/TargetDescription/Variant.hpp

@@ -6,7 +6,7 @@ namespace Bloom::Targets::TargetDescription
 {
     struct Variant
     {
-        std::string orderCode;
+        std::string name;
         std::string pinoutName;
         std::string package;
         bool disabled = false;