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/include/scwx/common/characters.hpp

@@ -1,9 +1,12 @@
 #pragma once
 
+#include <string>
+
 namespace scwx
 {
 namespace common
 {
+
 namespace Characters
 {
 
@@ -11,5 +14,13 @@ constexpr char DEGREE = static_cast<char>(0xb0);
 constexpr char ETX    = static_cast<char>(0x03);
 
 } // namespace Characters
+
+namespace Unicode
+{
+
+extern const std::string kDegree;
+
+} // namespace Unicode
+
 } // namespace common
 } // namespace scwx