comprehensive update

1) remove unused components: camera view (due it causes segmentation faults), compute resources and all related, illuminator controller (due in useless without camera view), image storage service, temperature and humidity service
2) database schema - reduce tables references, features storing in records themselves in compressed form, add records creation and editing date and time, add separator comment column
3) analysis - rework of pipeline and ui, now database storing only raw data and all display values calculated from it
4) lights service - add reconnection if disconnected
5) add width and height command line arguments
6) fix some typos and other issues

GSS2.Core/Extensions/EnumerableExtensions.cs

@@ -46,4 +46,32 @@ public static class EnumerableExtensions
             variance += Math.Pow(value - mean, 2.0);
         return variance / values.Count();
     }
+    public static double StdDev(this IEnumerable<double> values) => Math.Sqrt(Variance(values));
+    public static float Variance(this IEnumerable<float> values)
+    {
+        if (values.Count() == 1)
+            return 0;
+
+        float mean = values.Average();
+        float variance = 0.0f;
+        foreach (int value in values)
+            variance += MathF.Pow(value - mean, 2.0f);
+        return variance / values.Count();
+    }
+    public static float StdDev(this IEnumerable<float> values) => MathF.Sqrt(Variance(values));
+
+    public static IEnumerable<IEnumerable<TValue>> Chunk<TValue>(this IEnumerable<TValue> values, IEnumerable<int> chunks)
+    {
+        if (chunks.Count() == 0)
+            throw new InvalidDataException();
+        if (values.Count() != chunks.Sum())
+            throw new InvalidDataException();
+
+        var start = 0;
+        foreach (var chunk in chunks)
+        {
+            yield return values.Skip(start).Take(chunk);
+            start += chunk;
+        }
+    }
 }