New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/platform/utm_mgrs_utils.hpp

@@ -0,0 +1,43 @@
+#pragma once
+
+#include <optional>
+#include <string>
+
+#include "geometry/latlon.hpp"
+
+namespace utm_mgrs_utils
+{
+/* Convert from Lat and Lon coordinates in WGS 84 projection to UTM string.
+ * Preconditions:
+ *   -180 < lon <= 180
+ *   -80 < lat <= 84
+ *
+ * TODO: use Universal polar stereographic coordinate system for North pole
+ *       and South pole regions. Would be needed when OM shows 3D globe.
+ */
+std::string FormatUTM(double lat, double lon);
+
+/* Convert from Lat and Lon coordinates in WGS 84 projection to MGRS square string
+ * Parameter prec should be a number from 1 to 5.
+ * prec = 1 gives MGRS coordinates "11S PA 7 1" (lowest precision)
+ * prec = 2 gives MGRS coordinates "11S PA 72 11"
+ * prec = 3 gives MGRS coordinates "11S PA 723 118"
+ * prec = 4 gives MGRS coordinates "11S PA 7234 1184"
+ * prec = 5 gives MGRS coordinates "11S PA 72349 11844" (highest precision)
+ *
+ * Preconditions:
+ *   -180 < lon <= 180
+ *   -80 < lat <= 84
+ *
+ * TODO: use Universal polar stereographic coordinate system for North pole
+ *       and South pole regions. Would be needed when OM shows 3D globe.
+ */
+std::string FormatMGRS(double lat, double lon, int prec);
+
+// Covevrt UTM coordinates to Lat Lon. If UTM parameters are invalid function returns false
+std::optional<ms::LatLon> UTMtoLatLon(int easting, int northing, int zone_code, char zone_letter);
+
+// Covevrt MGRS coordinates to Lat Lon. If parameters are invalid function returns false
+std::optional<ms::LatLon> MGRStoLatLon(int easting, int northing, int zoneCode, char zone_letter, char squareCode[2]);
+
+}  // namespace utm_mgrs_utils