feat!: support only .NET Framework 4.7.2

In order to conform with the plugin format and the workflow, the .csproj
file was moved up a level to the root of the `src` folder and the
solution file was renamed.

Workflows were also changed to match the plugin workflows.

BREAKING CHANGE: Supports ONLY .NET Framework 4.7.2

src/JsonStandardObjects/EventArgs and Constants.cs

@@ -0,0 +1,77 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Crestron.SimplSharp;
+
+namespace PepperDash.Core.JsonStandardObjects
+{
+	/// <summary>
+	/// Constants for simpl modules
+	/// </summary>
+	public class JsonStandardDeviceConstants
+	{
+		/// <summary>
+		/// Json object evaluated constant
+		/// </summary>
+		public const ushort JsonObjectEvaluated = 2;
+
+		/// <summary>
+		/// Json object changed constant
+		/// </summary>
+		public const ushort JsonObjectChanged = 104;
+	}
+
+	/// <summary>
+	/// 
+	/// </summary>
+	public class DeviceChangeEventArgs : EventArgs
+	{
+		/// <summary>
+		/// Device change event args object
+		/// </summary>
+		public DeviceConfig Device { get; set; }
+
+		/// <summary>
+		/// Device change event args type
+		/// </summary>
+		public ushort Type { get; set; }
+
+		/// <summary>
+		/// Device change event args index
+		/// </summary>
+		public ushort Index { get; set; }
+
+		/// <summary>
+		/// Default constructor
+		/// </summary>
+		public DeviceChangeEventArgs()
+		{
+
+		}
+
+		/// <summary>
+		/// Constructor overload
+		/// </summary>
+		/// <param name="device"></param>
+		/// <param name="type"></param>
+		public DeviceChangeEventArgs(DeviceConfig device, ushort type)
+		{
+			Device = device;
+			Type = type;
+		}
+
+		/// <summary>
+		/// Constructor overload
+		/// </summary>
+		/// <param name="device"></param>
+		/// <param name="type"></param>
+		/// <param name="index"></param>
+		public DeviceChangeEventArgs(DeviceConfig device, ushort type, ushort index)
+		{
+			Device = device;
+			Type = type;
+			Index = index;
+		}
+	}
+}