add saving slewing trajectory in a file

mcc/mcc_moving_model_common.h

@@ -59,6 +59,9 @@ struct MccSimpleMovingModelParams {
     double brakingAccelX{0.0};
     double brakingAccelY{0.0};
 
+    // slewing trajectory file. if empty - just skip saving
+    std::string slewingPathFilename{};
+
 
     // *******    tracking mode    *******
 
@@ -76,6 +79,10 @@ struct MccSimpleMovingModelParams {
     // it it is greater then the current mount coordinates are used as target one
     double trackingMaxCoordDiff{20.0};
 
+    // tracking trajectory file. if empty - just skip saving
+    std::string trackingPathFilename{};
+
+
     // *******    guiding mode    *******
 
     double guidingCorrectionRange[2]{0.3_arcsecs, 3.0_arcsecs};