added basic xml comments to all Oqtane.Services interfaces

Oqtane.Client/Services/Interfaces/IInstallationService.cs

@@ -4,12 +4,42 @@ using Oqtane.Shared;
 
 namespace Oqtane.Services
 {
+
+    /// <summary>
+    /// Service to manage (install master database / upgrade version / etc.) the installation
+    /// </summary>
     public interface IInstallationService
     {
+        /// <summary>
+        /// Returns a status/message object with the current installation state 
+        /// </summary>
+        /// <returns></returns>
         Task<Installation> IsInstalled();
+
+        /// <summary>
+        /// Starts the installation process 
+        /// </summary>
+        /// <param name="config">connectionString, database type, alias etc.</param>
+        /// <returns>internal status/message object</returns>
         Task<Installation> Install(InstallConfig config);
+
+        /// <summary>
+        /// Starts the upgrade process
+        /// </summary>
+        /// <returns>internal status/message object</returns>
         Task<Installation> Upgrade();
+
+        /// <summary>
+        /// Restarts the installation
+        /// </summary>
+        /// <returns>internal status/message object</returns>
         Task RestartAsync();
+
+        /// <summary>
+        /// Registers a new <see cref="User"/>
+        /// </summary>
+        /// <param name="email">Email of the user to be registered</param>
+        /// <returns></returns>
         Task RegisterAsync(string email);
     }
 }