Add NIP 4 and NIP 6 tracking stations (#295)

* Add NIP 4 Yeniseisk tracking station

Add the NIP 4 Yeniseisk tracking station to central Siberia, to provide downrange coverage for launches from Baikonur.

* Add NIP-6 too

Add NIP-6 tracking station to Kamchatka Peninsula

Author: Capkirk123

GameData/RealSolarSystem/RSS_CommNet_Stations.cfg

@@ -375,6 +375,24 @@
                     alt = 50
                 }
 
+                City2
+                {
+                    name = NIPTrackingStation
+                    objectName = NIP 4 - Yeniseisk
+                    lat = 58.445833
+                    lon = 92.265833
+                    alt = 80
+                }
+
+                City2
+                {
+                    name = NIPTrackingStation
+                    objectName = NIP 6 - Vulkanny
+                    lat = 53.101389
+                    lon = 158.359167
+                    alt = 50
+                }
+
                 City2
                 {
                     name = KSATTrackingStation