functional card/row edit and drag

Serialization/SerialColor.cs

@@ -0,0 +1,42 @@
+using Godot;
+using System.Text.Json.Serialization;
+
+public class SerialColor
+{
+    [JsonInclude]
+    public float R { get; set; }
+    [JsonInclude]
+    public float G { get; set; }
+    [JsonInclude]
+    public float B { get; set; }
+    public void Deconstruct(out float r, out float g, out float b)
+    {
+        r = R;
+        g = G;
+        b = B;
+    }
+    public SerialColor()
+    {
+        R = 0;
+        G = 0;
+        B = 0;
+    }
+    public SerialColor(float r, float g, float b)
+    {
+        R = r;
+        G = g;
+        B = b;
+    }
+    public SerialColor(Color c)
+    {
+        R = c.R;
+        G = c.G;
+        B = c.B;
+    }
+    public static implicit operator Color(SerialColor sc)
+        => new(
+            sc.R,
+            sc.G,
+            sc.B
+        );
+}