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/geographic.hpp

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <string>
+
 namespace scwx
 {
 namespace common
@@ -26,5 +28,18 @@ struct Coordinate
    }
 };
 
+enum class DegreeStringType
+{
+   Decimal,
+   DegreesMinutesSeconds
+};
+
+std::string
+GetLatitudeString(double           latitude,
+                  DegreeStringType type = DegreeStringType::Decimal);
+std::string
+GetLongitudeString(double           longitude,
+                   DegreeStringType type = DegreeStringType::Decimal);
+
 } // namespace common
 } // namespace scwx