Updating radar site display fields to be more human-friendly

- Latitude/longitude in degrees N/S/E/W
- Radar types with hyphens
- Sort by raw decimal values

wxdata/source/scwx/common/characters.cpp

@@ -0,0 +1,16 @@
+#include <scwx/common/characters.hpp>
+
+namespace scwx
+{
+namespace common
+{
+
+namespace Unicode
+{
+
+const std::string kDegree {"\302\260"};
+
+} // namespace Unicode
+
+} // namespace common
+} // namespace scwx