Implemented program that extracts peak data to database.

OsmToDatabase.Peaks/Program.cs

@@ -1,2 +1,42 @@
-// See https://aka.ms/new-console-template for more information
+using OsmSharp;
-Console.WriteLine("Hello, World!");
+using OsmSharp.Streams;
+using OsmToDatabase.Common;
+
+OsmContext db = new OsmContext();
+
+using (var fileStream = new FileInfo(args[0]).OpenRead())
+{
+    var source = new PBFOsmStreamSource(fileStream);
+    foreach (var element in source)
+    {
+        if (element is Node node)
+        {
+            if (node.TagValueByKey("natural") != "peak")
+            {
+                continue;
+            }
+
+            Peak peak = new Peak
+            {
+                Id = node.Id.Value,
+                Version = node.Version.Value,
+                TimeStamp = node.TimeStamp.Value,
+                Longitude = node.Longitude.Value,
+                Elevation = node.TagDoubleValueByKey("ele"),
+                Prominence = node.TagDoubleValueByKey("prominence"),
+                Isolation = node.TagDoubleValueByKey("isolation"),
+                Name = node.TagValueByKey("name"),
+                AlternativeName = node.TagValueByKey("alt_name"),
+                EnglishName = node.TagValueByKey("name:en"),
+                EnglishAlternativeName = node.TagValueByKey("alt_name:en"),
+                ItalianName = node.TagValueByKey("name:it"),
+                SlovenianName = node.TagValueByKey("name:sl"),
+                GermanName = node.TagValueByKey("name:de"),
+                SummitRegisterPresent = node.TagValueByKey("summit:register") == "yes",
+                Wikidata = node.TagValueByKey("wikidata")
+            };
+            await db.AddAsync(peak);
+            await db.SaveChangesAsync();
+        }
+    }
+}