refactor: rearrange and add solution for 4-series

src/PepperDash.Essentials.Core/Plugins/IPluginDeviceFactory.cs

@@ -0,0 +1,25 @@
+using System.Collections.Generic;
+using PepperDash.Core;
+
+
+namespace PepperDash.Essentials.Core
+{
+    /// <summary>
+    /// Defines a class that is capable of loading custom plugin device types
+    /// </summary>
+    public interface IPluginDeviceFactory : IDeviceFactory
+    {
+        /// <summary>
+        /// Required to define the minimum version for Essentials in the format xx.yy.zz
+        /// </summary>
+        string MinimumEssentialsFrameworkVersion { get; }
+
+    }
+
+    public interface IPluginDevelopmentDeviceFactory : IPluginDeviceFactory
+    {
+        List<string> DevelopmentEssentialsFrameworkVersions { get; }
+    }
+}
+
+