Reorganize all observatory core projects into monorepo (#25)

* chore: move all observatory repos to core

* only save journal folder on change, don't constantly re-check during monitoring

* chore: monorepo project changes

* chore: monorepo migration

ObservatoryFramework/Attributes.cs

@@ -0,0 +1,60 @@
+using System;
+using System.Collections.Immutable;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Observatory.Framework
+{
+    public class SettingDisplayName : Attribute
+    {
+        private string name;
+
+        public SettingDisplayName(string name)
+        {
+            this.name = name;
+        }
+
+        public string DisplayName
+        {
+            get => name;
+            set => name = value;
+        }
+    }
+
+    public class SettingIgnore : Attribute
+    { }
+
+    public class SettingNumericUseSlider : Attribute
+    { }
+
+    public class SettingNumericBounds : Attribute
+    {
+        private double minimum;
+        private double maximum;
+        private double increment;
+
+        public SettingNumericBounds(double minimum, double maximum, double increment = 1.0)
+        {
+            this.minimum = minimum;
+            this.maximum = maximum;
+            this.increment = increment;
+        }
+
+        public double Minimum
+        {
+            get => minimum;
+            set => minimum = value;
+        }
+        public double Maximum
+        {
+            get => maximum;
+            set => maximum = value;
+        }
+        public double Increment
+        {
+            get => increment;
+            set => increment = value;
+        }
+    }
+}