fix #647 make ProcessVersions Entity a record to ensure readonly access to props

This is to address a PR #648 review comment to ensure that only the external
users are not able to modify the instance values.

src/ElectronNET.API/Entities/ProcessVersions.cs

@@ -0,0 +1,10 @@
+namespace ElectronNET.API
+{
+    /// <summary>
+    /// An object listing the version strings specific to Electron
+    /// </summary>
+    /// <param name="Chrome">Value representing Chrome's version string</param>
+    /// <param name="Electron">Value representing Electron's version string</param>
+    /// <returns></returns>
+    public record ProcessVersions(string Chrome, string Electron);
+} 

src/ElectronNET.API/Entities/Versions.cs

@@ -1,18 +0,0 @@
-namespace ElectronNET.API
-{
-    /// <summary>
-    /// 
-    /// </summary>
-    public class Versions
-    {
-        /// <summary>
-        /// Gets or sets a value representing Chrome's version string.
-        /// </summary>
-        public string Chrome { get; set; }
-
-        /// <summary>
-        /// Gets or sets a value representing Electron's version string.
-        /// </summary>
-        public bool Electron { get; set; }
-    }
-}

src/ElectronNET.API/Process.cs

@@ -83,11 +83,11 @@ namespace ElectronNET.API
         /// The process.versions property returns an object listing the version strings of
         /// chrome and electron.
         /// </summary> 
-        public Task<Versions> VersionsAsync 
+        public Task<ProcessVersions> VersionsAsync 
         {
             get
             {
-                return BridgeConnector.GetValueOverSocketAsync<Versions>(
+                return BridgeConnector.GetValueOverSocketAsync<ProcessVersions>(
                     "process-versions", "process-versions-Completed");
             }
         }