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/Comm/TcpClientConfigObject.cs

@@ -0,0 +1,59 @@
+using Newtonsoft.Json;
+
+namespace PepperDash.Core
+{
+    /// <summary>
+    /// Client config object for TCP client with server that inherits from TcpSshPropertiesConfig and adds properties for shared key and heartbeat
+    /// </summary>
+    public class TcpClientConfigObject
+    {
+        /// <summary>
+        /// TcpSsh Properties 
+        /// </summary>
+        [JsonProperty("control")]
+        public ControlPropertiesConfig Control { get; set; }
+
+        /// <summary>
+        /// Bool value for secure. Currently not implemented in TCP sockets as they are not dynamic
+        /// </summary>
+        [JsonProperty("secure")]
+        public bool Secure { get; set; }
+
+        /// <summary>
+        /// Require a shared key that both server and client negotiate. If negotiation fails server disconnects the client
+        /// </summary>
+        [JsonProperty("sharedKeyRequired")]
+        public bool SharedKeyRequired { get; set; }
+
+        /// <summary>
+        /// The shared key that must match on the server and client
+        /// </summary>
+        [JsonProperty("sharedKey")]
+        public string SharedKey { get; set; }
+
+        /// <summary>
+        /// Require a heartbeat on the client/server connection that will cause the server/client to disconnect if the heartbeat is not received. 
+        /// heartbeats do not raise received events. 
+        /// </summary>
+        [JsonProperty("heartbeatRequired")]
+        public bool HeartbeatRequired { get; set; }
+
+        /// <summary>
+        /// The interval in seconds for the heartbeat from the client. If not received client is disconnected
+        /// </summary>
+        [JsonProperty("heartbeatRequiredIntervalInSeconds")]
+        public ushort HeartbeatRequiredIntervalInSeconds { get; set; }
+
+        /// <summary>
+        /// HeartbeatString that will be checked against the message received. defaults to heartbeat if no string is provided. 
+        /// </summary>
+        [JsonProperty("heartbeatStringToMatch")]
+        public string HeartbeatStringToMatch { get; set; }
+
+        /// <summary>
+        /// Receive Queue size must be greater than 20 or defaults to 20
+        /// </summary>
+        [JsonProperty("receiveQueueSize")]
+        public int ReceiveQueueSize { get; set; }
+    }
+}